The moment New Directions has been waiting for has finally arrived: it’s time for Regionals! But when Sue pulls a fast one on Will and the glee clubbers, their chances at the title could be compromised. Meanwhile, Quinn’s life changes forever.

Mr. Scnuester encourages the members of glee club to express themselves using Lady Gaga’s music; Rachel has a life-changing encounter and Tina embraces her inner goth.

A sore throat impacts Rachel’s singing and Kurt tries to impress his father. Puck hopes to elevate his social status.

Mr. Schuester investigates when a salacious list about the glee club members circulates the school; a video surfaces of Olivia Newton-John performing with Sue.

Kurt sets his dad up with an unexpected partner and April returns to save the glee club.

Mr. Schuester is concerned that the guys are disrespecting the women of the glee club; the club members perform some of Madonna’s greatest hits.

Rachel and Finn’s romance hits a rocky patch when she becomes involved with a competitor, forcing Mr. Schuester to have a talk with the competitor’s coach.

Sectionals is finally here for the Glee Club, but when Quinn’s secret unravels, the club may not be able to recover in time to compete. Meanwhile, Sue’s scheming hits an all-time high, and with Emma and Ken’s marriage looming, Will makes a decision that could change his life forever in the fall finale.

When the Glee Club is left out of the yearbook because of budget cuts, everyone seems to be relieved that they won’t have to suffer the ridicule of years past. Everyone except Rachel, that is, who wants her legacy cemented in print. Meanwhile, Quinn makes it her mission to be in the Cheerios yearbook photo, [...]

Concerned that Sue is up to no good, Will pays a visit to an instructor of a competing Glee Club to see what information Sue may be leaking, which leads to the club getting a look at their hair-rising competition. Meanwhile, Kurt gives Rachel a makeover to impress Finn, but he may have ulterior motives.

Mr. Schuester splits the Glee Club into pairs to sing their favorite ballad, but when one kid gets sick, he’s forced to step in and winds up in a sticky situation. Meanwhile, Finn and Quinn have to face the music when dinner with her parents goes awry.

When Artie’s chances of traveling with the group to Regionals are in question, Will challenges the kids to step out of their comfort zones and experience life from a different point of view. Meanwhile, the Glee Club hosts its first “diva-off” between Kurt and Rachel, and Sue reveals a softer side.

Inspired the by the students, Will composes a mash-up for a very special occasion. Meanwhile, in a shocking reversal of roles, McKinley High’s cool kids are dethroned in an “icy” fashion, and Sue shows off her softer side.

To cause dissention among the Glee Club members, Sue forces the students to compete against each other, but the real showdown happens when she and Will get called into the principal’s office. Meanwhile, the Glee kids rally to support Quinn after some shocking news is revealed.

Will challenges the kids to a healthy dose of competition with boys against girls in a mashup showdown. Meanwhile, Terri takes a job as the school nurse, despite having no medical experience, to keep an eye on Will.

Will thinks the glee club desperately needs more of an edge, so he brings in his former classmate, April Rhodes (guest star Chenoweth), to spice things up. Will’s plan seems to be going smoothly until he realizes he may be losing a key member of the club.

Kurt takes center stage when he tries out for the football team in order to impress his dad. Sandy and Sue join forces to carry out their plans for destroying the Glee Club. Meanwhile, Quinn and Finn’s relationship is tested when they receive some life-changing news.

Will forms an all-male a cappella group, but when he neglects the glee club, the kids decide to hire a well-known choreographer to coach them. Meanwhile, Mercedes falls in love. Josh Groban appears as himself.

The Glee Club performs in front of the school for the first time and pushes their performance to the limits.

Murphy chose a Midwest setting as he himself originates from Indiana, and recalls childhood visits to Ohio to the Kings Island theme park.
Although uncertain why he selected Lima specifically, Murphy recounts that the location stayed in his memory as: “when I was a very little kid, there was a series of tornadoes that swept through [...]