The story is set in the fictional William McKinley High School in Lima, Ohio and focuses on the school choir - aka, glee club.
Newly christened glee club program leader Will was considering leaving the school and the program behind when he saw New Direction performing the song.
A large part of the show is an ensemble musical where the whole cast gets together and performs spirited numbers as a part of the glee club.
The cast of characters stars Mr. Shue, a former glee club star who starts a glee team at the school to fill a hole in his life.
Initially, only a few are a part of the glee club as it is one of the most unpopular clubs in school.