Finn hopes that a visit from Santana will inspire the New Directions to unleash their inner divas, while, in New York, Kurt attempts to curb Rachel's diva tendencies.

When Finn visits NYC, he becomes unsure how he fits into Rachel's new life. Elsewhere, Blaine makes a confession to Kurt, while Brittany and Santana come to a decision.

Struggling to accept Vocal Adrenaline's attitude, Will realises just how much he misses the New Directions. Elsewhere, Coach Beiste returns.

A seemingly regular day at McKinley takes an unexpected and terrifying turn when an unthinkable event has lasting consequences for the school.

Graduation is over but there's so much more in store! Who stays? Who goes? Are Finchel really over? Will Sue ever have that baby?! Of course McKinley High will need some new students, plus, mega-stars Sarah Jessica Parker and Kate Hudson have joined the cast to act as mentors to budding New York stars Rachel and Kurt.

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

With Brittany S. Pierce down in the dumps, Mr. Schue hopes the music of her icon will cheer her up. In NYC, Rachel has a point to prove to dance teacher, Cassie.

Kurt hopes to impress vogue.com bigwig Isabelle Klempt and following a makeover, Rachel allows herself to grow closer to Brody. Meanwhile in Lima, it's Blaine versus Brittany as the race for Senior Class President begins.

With the Nationals looming, the kids prepare a high-concept routine. When Tina bumps her head in rehearsals, her New Directions world is turned upside down.

A disco inferno rages at McKinley when the New Directions pay homage to the iconic 70s movie 'Saturday Night Fever'. Plus, Sue faces a battle.

When Empire launches its national tour in Philly, things heat up and egos clash. Jamal and Kai's relationships gets complicated, while Treasure has an embarrassing mishap on stage.

Greased Lightning hits McKinley on the opening night of the musical. Santana, Rachel and Kurt return to Lima for the occasion, while Kitty steps up her vendetta against Marley.

While Finn hopes to unite the warring New Directions by dividing them into pairs to perform duets, the Dalton Academy Warblers make their presence felt.

As auditions for 'Grease' begin, Artie hopes to cheer up Finn, with the help of the returning Mercedes and Mike. Footballer Ryder Lynn is also introduced to the gang.

Finn enlists his former buddies to help mentor New Directions through Sectionals, while in NYC, Rachel and Kurt's quiet celebration doesn't quite go to plan.

While the New Directions face a crisis, Rachel receives an almost unprecedented honour and Kurt gets a second chance.

It's Christmas at McKinley and while the Puckerman brothers take steps to mend their dysfunctional family, Sue unearths some long-hidden seasonal spirit.

Will and Emma's wedding is finally here, and it lands on the day of romance and love: Valentine's Day. The former and current members of New Directions reunite in Lima to celebrate.

Rachel wrestles with her conscience when she's offered a film role that comes with a catch, leading Kurt to call some old friends to stage an intervention and stop her from making a decision she'll regret.

The girls of the glee club organize a Sadie Hawkins dance at McKinley High, in which the girls ask out their dates, leading to interesting couplings among the members of `New Directions'. Meanwhile, Sam is convinced that the `Warblers' cheated at Sectionals, and he makes it his mission to find the evidence.