In the face of much criticism, an optimistic high school teacher challenges a group of outcasts to realize their potential in the school's glee club.
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 McKinley gang celebrate the life of former quarterback and New Directions member Finn Hudson. The episode mirrors the real-life death of actor Cory Monteith (1982-2013), who played Finn.
The members of New Directions tackle their assignment of getting out of their comfort zones and determining whether they're more like "Katy" or "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.
While New Directions takes on the music of Billy Joel, Kurt and Blaine reunite in New York. Meanwhile, Sam makes plans about his future.
Blaine believes he has the best plan to win Nationals, but he doesn't take the glee club's criticism too well when the students accuse him of being too controlling. Over in New York, Kurt also runs into control issues when the band disagrees over the venue of their first official gig that Kurt booked. Meanwhile, Sue reveals the story behind her iconic tracksuit and 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.
As graduation approaches, Tina, Blaine and Sam band together to hold a senior "lock-in" at school, hoping to savor their last chance at hanging out together. But their plans are thwarted when Becky joins unexpectedly. Meanwhile, in New York, Elliot is stuck in the middle between Rachel and Santana's feud.
Dedicating their performance to Finn’s memory, New Directions arrive in Los Angeles to take part in the National High School Show Choir Championship, and face off against “Throat Explosion”, their fiercest competition to date.
The original members of New Directions reunite at McKinley to celebrate and reflect on the history of the seemingly doomed glee club.
As the fate of the glee club becomes a reality, April and Holly plot a plan to save New Directions. Meanwhile, Rachel and Santana attempt to make amends after their blowout fight.
Glee-club alumni members are followed in New York City several months after leaving New Directions: Blaine and Sam move in with Kurt; Artie struggles to get around Manhattan; Rachel settles into the life of a Broadway star; and Mercedes moves to NYC to work 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.
Rachel makes her Broadway debut in "Funny Girl."
Rachel is presented with a unique opportunity which could either take her career to the next level, or possibly kill it entirely. Meanwhile, Mercedes asks for Santana’s help finding a “new sound” for her latest single, and a wealthy New York socialite takes Blaine under her wing.
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.