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.
Rachel attempts to make a deal in which Will's glee club under perform on purpose.
Sue attempts to help sort out some relationships. Kitty helps Rachel.
Brittany and Santana need to do some convincing whilst Mercedes attempts to convince Rachel to go for her dreams.
Will takes desperate measures to teach the bullies of Vocal Adrenaline about tolerance. Meanwhile, New Directions rallies to help Rachel transition into her new life when she finds out her childhood home has been sold.
The members of New Directions are busy at work planning, planning, and planning, while Sue encourages everyone to follow their hearts.
A high-strung, demanding tween requests that the members of New Directions perform at his bar mitzvah, and the glee club must band together for its first public performance. Meanwhile, Spencer pushes Roderick to lose weight.
After Dalton Academy burns to the ground, the Warblers find themselves having to combine with New Directions.
New Directions and the Warblers battle it out and Rachel has to choose between NYADA and Broadway.
New Directions take their final bows.
The show features flashbacks to the original New Directions members joining the club.