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After a tough loss at Regionals, the glee club is back as the underdogs of McKinley High. When the school is faced with even more budget cuts, Mr. Schuester pushes the kids to help recruit new members for the club. Rachel and Finn disagree on new recruits, and aren’t sure they will be able to come together in perfect harmony.

When Brittany and the gang try to convince Mr. Schuester to let them do a Britney Spears number, he is reluctant to go that edgy. Meanwhile, an insecure Will is curious about Emma’s new beau, Dr. Carl Howell, so he convinces her to bring him in to talk to the kids about dental hygiene. While the dreamy doc inspires the girls to take their dental health more seriously, Will is left feeling worse than before.

Finn has an existential crisis when he believes he sees the face of Jesus in his grilled cheese sandwich. Meanwhile, the rest of the kids rally around Kurt after he has a crisis of his own that leads to a larger discussion among the group about their own theology.

The glee club works on a duet assignment, and Finn and Rachel plan to throw the competition so that Sam can have a shot at winning. Meanwhile, a love triangle between Mike, Tina and Artie develops.

Will decides to have the glee club perform “The Rocky Horror Show” for the annual school musical after learning of Emma’s newfound love for the cult classic. Despite Sue’s usual scheming, the members of New Directions inject their distinctive style to such timeless tracks as “The Time Warp” and “Damn It, Janet.”

After Finn and Sam find an unconventional way of controlling their urges, a few glee club members pick up on the strategy and start using it too. But when Coach Beiste gets wind of what they are up to, the glee club has some explaining to do. Meanwhile, the Girls vs. Boys Tournament returns, Kurt meets an ally from a rival glee club, Puck and Artie join forces and coach Beast is on the verge of quitting her job.

When Mr. Schuester gets sick, a substitute teacher takes over his Spanish class and the glee club and winds up winning over the whole New Directions clan. Meanwhile, when Sue fills in for Principal Figgins as McKinley’s top dog, she tries to flex her power on campus.

It's all about wedding and parents with Kurt getting ready for his father Burt's upcoming marriage to Finn's mom Carole, Sue decides to compete by getting married as well which will lead to the introduction of an awesome guest star: Carol Burnett. Carol will play Sue's Nazi-hunting mother Doris, who comes to visit Sue in Ohio.

New Directions heads to the big Sectionals competition to go head-to-head against the Warblers and the Hipsters. While trouble brews between some of the young couples, Emma and Carl grow closer.

It's Christmas time at McKinley High and Finn tries to get everyone in the holiday spirit; Brittany needs no help because she still believes in Santa Claus. In other news, Sue scams the teacher's Secret Santa

A local football championship game takes place and the "Thriller" mash-up is performed during the halftime show. The Cheerios, McKinley High's cheerleading team, compete at Regionals.

Love is in the air at McKinley High when the glee club sets up a kissing booth for Valentine's Day. Things don't go as planned, however, and hearts end up getting broken.

Rachel tries to launch a comeback into the McKinley High social stratosphere with a little help from Brittany. Meanwhile, Sam starts a tribute band.

Principal Figgins teaches the student body about the danger of underage drinking, and the glee club is personally touched by the message. Meanwhile, Mr. Schuester and Coach Beiste indulge in a little fun of their own.

Holly Holiday returns as the sex education substitute teacher and helps the glee club out with some new numbers. On the other hand, Emma becomes the head of the celibacy club.

With Sue Sylvester coaching Aural Intensity, Blaine and the Warblers’ dynamic set list and tough judges Tammy Jean Albertson and Sister Mary Constance, the kids of New Directions decide the only way to win Regionals is to write and perform their own original songs. Meanwhile, Quinn is hell-bent on getting Finn back and ruling McKinley once again.

The glee club agrees to help raise funds for another under-the-radar group; big decisions are made and relationships are tested.

The glee club learns about self-acceptance through the music of Lady Gaga; Lauren and Quinn compete for prom queen; Ms. Pillsbury faces with her issues; Rachel makes a life-changing decision; Santana schemes.

Sue Sylvester revives the school newspaper and decides to print a few inflammatory blind items. The glee club gains a whole new respect for Sam when they discover some interesting new information about his family life. Meanwhile, April Rhodes (guest star Chenoweth) returns to Lima and tries to convince Mr. Schuester to hit the road with her.

When the entertainment for prom falls through, Principal Figgins asks New Directions to perform at the dance much to prom coordinator Sue’s dismay. Things get heated as the competition for prom king and queen draws closer, and Jessie St. James returns.

New Directions continues to strategize their set list for Nationals with a little help from Jessie St. James. Meanwhile, an unexpected loss rocks the world of one of McKinley’s own.

New Directions heads to Nationals to compete in the ultimate singing showdown.

The glee kids are down in the dumps following their disappointing showing at Nationals, so Will assigns them a project to get them back on track. Meanwhile, Ms. Sylvester wants to go to Washington: Sue's running for Congress.

Shelby Corcoran returns to the halls of McKinley High. Meanwhile, Mr. Schuester initiates a boot camp for some of the members of New Directions.

Emma gets a visit from her parents; Mike Chang's parents get involved when his grades aren't up to their standards.

Irish exchange student Rory Flanagan arrives at McKinley High. He is living at Brittany's house, and she thinks he's a leprechaun. Mercedes starts recruiting for Shelby's new glee club, and Sue's run for congress picks up steam.

The school musical West Side Story is readied for performance, with Artie as lead director. Finn meets with a football recruiter, whom Coach Beiste gains as an admirer. Kurt and Blaine reach a new, physical stage in their relationship, as do Rachel and Finn in theirs.

Congressional hopeful Sue Sylvester starts a smear campaign to ruin the candidacy of her biggest rival. Puck falls in love, and glee club directors Will and Shelby encourage some friendly competition between their clubs

Finn tries to rally the rival show-choirs behind one of their own; Sue’s bid for political office causes heartbreak for another teacher; and the student body elections turn scandalous.

In an attempt to recruit a few more members, Finn tracks down former teammate Sam Evans and convinces him to come back to the glee club. Tina comes to the defense of Harry and encourages him to pursue his dream while McKinley prepares to host the big sectionals performance.

Artie is asked to direct and produce a Christmas special for the local PBS station, while some of the New Directions learn the 'true' meaning of Christmas.

When Will tries to plan a special surprise for Emma, he enlists the glee club to help him sweep her off her feet. Meanwhile, Becky sets her sights on Artie, and Finn makes an announcement about his life plans after high school that surprises the glee club.

In a special episode celebrating the music of Michael Jackson, the rivalry between New Directions and the Warblers intensifies en route to Regionals. Meanwhile, Kurt and Rachel receive news regarding their admissions process at NYADA, and things continue to heat up between Sam and Mercedes.

Will assigns the glee club a Spanish singing assignment, and enlists the help of his musically-inclined night school teacher. Meanwhile, Rachel spills the beans to Kurt and Mercedes on Finn's marriage proposal, and Mercedes has love complications of her own.

In honor of Valentine's Day, Will challenges the New Directions to find and perform the world's greatest love songs. Meanwhile, Rachel's two dads Hiram and LeRoy Berry pay a visit to McKinley High.

Things heat up as the New Directions go head-to-head with the Dalton Academy Warblers at Regionals.

Much to Blaine's chagrin, his big-shot Hollywood actor brother, Cooper, comes to visit.

The Glee Club does disco in a tribute to Saturday Night Fever.

The glee club pays homage to a true icon when they cover Whitney Houston's greatest hits. Meanwhile, Emma and Will are one step closer to their dream wedding.

Rachel and Kurt finally get their chance to audition for the New York Academy of the Dramatic Arts. Meanwhile, Puck makes a decision about his future after a meeting with his father.

Brittany goes into high gear as class president to spearhead the prom. Then, after prom king and queen nominations are announced, the kids kick into campaign mode, and some of the outcasts organize a rival celebration.

Tina's head injury from falling into a fountain leaves her seeing her fellow singers and other people at McKinley High in a new way as rehearsals continue for the glee club's Nationals performance.

The glee club travels to Chicago, Illinois, to compete in Nationals against the best show choirs in the country, including Vocal Adrenaline, for celebrity judges including Lindsay Lohan and Perez Hilton.

The William McKinley High School class of 2012 graduates, and the glee club bids farewell to its graduating seniors.

In the season premiere episode, the members of New Directions compete amongst themselves to become the next star of the glee club. During open auditions, a fresh crop of students is introduced, including Marley and Jake Puckerman, Puck's half-brother. Meanwhile, Rachel has a rocky start at NYADA and struggles to please her demanding dance teacher, Cassandra July. She also meets Brody, a handsome upperclassman.

Brittany hopes the music of Britney Spears will get her out of a funk; a new friend helps Rachel adjust to life in New York.

In the wake of Kurt’s departure, Blaine tries to distract from his loneliness by entering the race for Senior Class President. The move puts him in direct conflict with Brittany who looks to repeat for a second term. After struggling to come up with fresh ideas for New Directions, Will begins to fear that he’s losing his enthusiasm for show choir. When an opportunity to reignite his passion and make a lasting positive impact on his students presents itself, the procrastinating Will gets prodding from two vastly different sources. After landing an internship with fashion icon Isabelle Klempt, Kurt comes up with an out-of-the-box idea to revitalize the fashionista’s sagging brand. While his initiative earns him a new mentor and earns Rachel a much needed makeover, his success also has a troublesome impact back in Lima.

Rachel and Kurt are caught off-guard when they get unexpected visits in New York City. Meanwhile, Santana and Brittany deal with the long distance between them, and Will and Emma disagree on a new job offer.

Hopes and schemes play out as the Glee Club holds auditions for the school’s musical.

Rachel and Kurt pay a visit to Lima as the glee club launches its production of "Grease". Meanwhile, Cassandra July returns to shake things up in Rachel's life, and Santana comes back to lend a helping hand.

A love triangle heats up among Marley, Jake and Ryder, and Blaine has a run-in with the Warblers.

It's time for Sectionals, and New Directions receives guidance from some of the recent McKinley graduates who volunteer to mentor the glee club during their Thanksgiving breaks. Meanwhile, Rachel and Kurt have a non-traditional holiday dinner in the Big Apple.

Finn thinks about his future with the glee club after Sectionals are over. Elsewhere, Rachel gets ready for NYADA's winter showcase; and Kurt gets a second chance at an audition.

A tribute to the film "Love, Actually" with different storylines all dealing with the holidays. Sam and Brittany live as if it's the end of the world as the Mayans know it. The Puckermans, including half-brothers Puck and Jake and their mothers, come together for Hanukkah. Artie has an epiphany through a dream sequence. Kurt has an unforgettable Christmas.

McKinley’s Sadie Hawkins dance offers several gleeks a rare chance to feel empowered. Sam and Blaine investigate a possible cheating scandal at Sectionals. Kurt makes a new friend at NYADA.

New Directions produces a sexy calendar to raise money for their trip to Regionals. Rachel is faced with a personal dilemma when she’s cast in a student film. Finn and Sue go toe-to-toe.

Finn encourages the glee-club members to channel their inner divas. Elsewhere, Rachel's arrogance causes Kurt to reach a breaking point; and Emma throws herself into wedding preparations.

Will and Emma get ready for their Valentine's Day wedding with the help of past and present New Directions members.

The kids of New Directions go head-to-head in their annual boys vs. girls mash-up competition, this time using the music of the movies. Meanwhile, in New York, Santana makes herself at home in the loft a little too quickly for Rachel and Kurt's comfort.

Blaine and Sue will have a sing-off, while Ryder has a scary story coming.

The New Directions tackle an assignment, meaning the songs as well as groups that everyone is too embarrassed to admit that they love.

The members of New Directions are prepping for regionals, but when an unthinkable event occurs at McKinley High, perspectives are put into order.

When Mr. Schuester comes up with the setlist for regionals, the New Directions are not pleased, Rachel sings an unexpected song for her "Funny Girl audition", and Marley writes an original song.

When the power goes out at McKinley High, Will and Finn enlist the members of New Directions to "unplug" and perform acoustic numbers. Meanwhile, Isabelle Wright asks Kurt to volunteer at the Vogue.com charity event, with Rachel and Santana in tow.

The members of New Directions take on the greatest hits of music icon Stevie Wonder. Meanwhile, Artie receives news that could affect his future and his mom. In New York, Rachel prepares for her "Funny Girl" callback.

It's finally time for Regionals, and the glee club is more determined than ever to advance to Nationals. Brittany returns from her MIT trip with a new attitude and Ryder finally has a lead on who is "catfishing" him.

The members of New Directions are back in action and take on their biggest assignment yet: the Beatles! As Will enlists the kids to pay homage to the classic song catalog from the Fab Four, Blaine and Kurt attempt to answer questions about their future together. Meanwhile, Rachel's New York ambitions take an unexpected turn.

As the Prom approaches, the race for Prom Queen brings out the best and the worst in candidates Tina and Kitty. Meanwhile, Sam tries to make a connection with a new school nurse, an increasingly discouraged Rachel waits for word on her Funny Girl callback, and Santana makes a new friend at work.

The New Directions remember Finn.

The members of New Directions tackle their assignment of getting out of their comfort zones and determining whether they're more like "Katy" (Perry) or (Lady) "Gaga." Kurt holds auditions for his new band and must decide if he'll let in the overly bold performer, Starchild. Meanwhile, Jake gets closer to Bree as he and Marley grow apart.

The glee club learns the dance of the hour: twerking. Meanwhile, Marley discovers Jake's relationship with Bree, and Rachel tries to convince Kurt they both should get tattoos.

The New Directions pay homage to the Piano Man: Billy Joel. As graduation looms closer, the seniors make plans for their futures beyond the halls of McKinley.

Blaine believes he has the best plan to win nationals, but the other club members think he's too controlling; members of Kurt's band disagree over the venue of their first gig; Sue gets in touch with her feminine side.

Sue Sylvester introduces the episode as a Christmas special that FOX did not allow to air from last year. The members of New Directions audition for roles in McKinley's living Nativity Scene. Meanwhile in New York, Rachel, Kurt and Santana work as Santa's elves at a mall.

Santana auditions and snags the role of Rachel’s understudy in “Funny Girl,” causing a feud between the roommates. Meanwhile, back in Lima, Tina and Artie compete against each other to be the class valedictorian.

When Sam, Tina and Blaine plan a lock-in at the school, Becky unexpectedly joins in; Elliot (Adam Lambert) gets caught in Santana and Rachel's feud.

The glee club -- and two special guests -- travels to Los Angeles to compete in nationals.

The glee club are saying goodbye to each other when two old guests come and decide to save the glee club.

With the McKinley High glee club officially at an end, past and present members of New Directions look towards the future.

New Directions alumni adjust to their new lives in the city; Blaine and Sam move in with Kurt; Artie has difficulty adjusting to life in Manhattan; Rachel likes being a Broadway star; Mercedes works on her album.

Rachel is faced with a decision that pits her education against her career. Sam and Mercedes consider rekindling their romance. Kurt comes face-to-face with a hate-crime.

Blaine suffers a crisis of confidence after gaining the dreaded “Freshman Fifteen.” Artie discovers that his newfound success with the ladies comes at a price. Mercedes tells Sam she’s still a virgin.

The gang must rally an uncharacteristically insecure Rachel in time to make her Broadway debut in Funny Girl… but not everyone in the audience is wishing Rachel the best.

The gang must rally an uncharacteristically insecure Rachel in time to make her Broadway debut in Funny Girl… but not everyone in the audience is wishing Rachel the best.

Santana helps Rachel do damage control for her flagging public image; Kurt tries to help a home for retired Broadway performers with their production of Peter Pan; to prove he is responsible, Sam adopts a dog - despite Mercedes’ objections.

Rachel meets a famous television writer, whose eccentric personality catches Rachel off guard. Meanwhile, Sam and Mercedes deal with the pressure of commitment as their careers take off, and the time has finally come for Blaine’s big showcase with June Dolloway at NYADA.

After Rachel's humiliating failure as TV actress, she comes home to Lima to figure out what she wants to do next. Upon discovering that Sue has banished the arts at McKinley, Rachel takes it upon herself to reinstate and lead the Glee Club. Meanwhile, Blaine, no longer in a relationship with Kurt, has moved home to coach the Warblers while Will is coaching rival Vocal Adrenaline, and Sam is the assistant coach for the McKinley football team.

Puck, Quinn, Santana, Mercedes, Brittany, Artie and Tina all return to McKinley for Homecoming and help Rachel and Kurt recruit for the new glee club.

Rachel and Kurt struggle as they try to rebuild and co-direct the glee club at McKinley. Meanwhile, Sue is concerned when Becky brings her new boyfriend to town.

Rachel hopes to form a deal in which Will's glee club purposefully under-performs at their invitational; Sue wants Sam to distract Rachel.

Rachel and Kurt redouble their efforts to recruit new members to New Directions after new rules are announced for the Show Choir Invitational. Sue enacts an elaborate plan to try reunite Kurt and Blaine. Will and Rachel have a much needed heart-to-heart.

Brittany and Santana plan their wedding. The Gleeks weekly assignment is the music of Burt Bacharach, and reigning diva Mercedes is recruited to act as a mentor for the new singers. Brittany learns a shocking family secret.

A new job forces Will to take a hard look at the choices he’s made. Rachel must come to terms with the fact her family home has finally been sold. Coach Beiste, returns to McKinley and the romantic tension that has been brewing between Sam and Rachel finally boils over.

The members of New Directions are busy at work planning, planning and planning, while Sue encourages everyone to follow their hearts.

The members of New Directions must come together to prepare for their first public performance at a high-strung tween's bar mitzvah.

Dalton Academy burns to the ground, and the Warblers must combine with the New Directions to form a super group. Meanwhile, Rachel begs Carmen Tibideaux to let her return to NYADA.

New Directions and the Warblers go head-to-head at sectionals. Meanwhile, Rachel must choose between returning to NYADA and doing another Broadway show with her past love, Jesse St. James.

GLEE goes back in time to see why the original members of New Directions signed up for glee club in the first place.

All of Will’s hard work and dedication to the Glee Club and to fostering the talents and dreams of his students pays off in a major way, and everyone shares in the feeling of joy that permeates the school as teachers and students reflect on their shared journey. Old rifts and wounds are healed and new sights are set on a promising future. Everyone seems to be ending up exactly as expected and right where they belong… along with more than a few unexpected surprises.