As a result of a technicality in the show choir competition rules, Will is not allowed to accompany New Directionsto sectionals because he had taken a mattress in the episode Mattress.
Rachel performing "Don't Rain On My Parade" at Sectionals.
Emma postpones her own wedding by several hours so that she can take the club in his place, although her fiancé, football coach Ken Tanaka, feels she is choosing Will over him. The glee club learns that Puck is the real father of Quinn's baby. They decide not to tell Rachel, believing that she will tell Finn, but she deduces it anyway and tells him. Angered by their betrayal, Finn fights Puck,then leaves the club on the eve of sectionals, and has to be replaced by Jacob Ben Israel.
New Directions arrive at the event to discover their competitors have received an advance copy of their set list, and are performing the songs they had chosen. Emma calls Will, who talks with Finn and convinces him to rejoin New Directions. The club scrambles together a new set list. Emma then confronts rival choir directors Grace Hitchensand Dalton Rumba, while New Directions are forced to choose new performance pieces at the last minute, aided by the return of Finn.
After their performance, Grace attempts to confess her duplicity to the judges, but they have already unanimously decided that New Directions has won the competition.
The kids singing "My Life Would Suck Without You" to Will.
Having previously discovered that his wife Terri was faking her pregnancy, Will tells her he no longer loves her.
He later attends Ken and Emma's delayed wedding to find that Ken has ended the relationship as a result of Emma's feelings for Will. She announces her intention to leave William McKinley High School, explaining that it will be too painful for her to carry on working with both Will and Ken. Back at school,Principal Figgins suspends Sue for leaking the glee club's set list, and has Will reinstated as New Directions' director. This leaves the Cheerios with no coach. The glee club members show Will their trophy and perform My Life Would Suck Without You for him because he could be at their sectionals win. As Emma prepares to leave the school, Will chases after her and stops her with a kiss.
