Will Schuester, a high school teacher, attempts to bring back the Glee Club at McKinley High School.
Everyone in the crowd is taken aback as Glee Club makes their first appearance in front of the school. Rachel discovers she has feelings for Finn.
Will spends more time gaining self-confidence and separating from the Glee Club as he starts an all-male singing group.
Kurt wants to impress his father, so he tries to join the football team. Sue and Sandy work together to execute their plot to take down Glee Club.
Will invites his old classmate April Rhodes to stir things up because he believes the glee club really needs more of an edge, up until he learns that he might be losing a vital club member.
With a mash-up showdown featuring boys against girls, Will pushes the children to a healthy dose of competition. Terri, who has no medical background, accepts a position as the school nurse in order to watch over Will.
Although Sue attempts to sow discord among the Glee Club members, the true confrontation starts when she and Will have to go to the principal's office.
Will creates a mash-up for a particularly special occasion after being inspired by the students. In an unexpected switch of roles, Sue displays her tender side as McKinley High's trendy students are eliminated in an "icy" manner.
Will pushes the children to see life from a fresh perspective, as Artie might not accompany the group to Regionals.
Will divides the Glee Club into couples to perform ballads, but he finds himself in a difficult situation when Matt becomes unwell and Will has to fill in.
Fearing that Sue has bad intentions, Will visits a glee club competitor's instructor to find out what information she might be revealing.
Everyone is delighted that they won't have to endure the mockery of previous years when Glee Club is excluded from the yearbook because of financial constraints.
After Quinn's secret is revealed, the Glee Club might not be able to recover in time to compete, even though Sectionals is finally here for them.
With increased confidence, Glee Club works on new songs for Regionals, but Finn and Rachel's love relationship thwarts their efforts.
Mr. Schuester dares students to select Madonna songs for their upcoming assignment because he is worried that the guys are bullying the Glee Club girls.
Kurt brings his father together with an unexpected partner, which backfires on his plans.
When a scandalous list of Glee Club members makes the rounds of McKinley High, Will begins an investigation.
Rachel has a panic attack as her singing voice is affected by a sore throat. Kurt attempts to change who he is in order to win over his father.
Bryan Ryan, Will's old high school rival, causes problems for Glee Club. Rachel has a persistent personal problem.
The Glee Club is encouraged by Will to use Lady Gaga's music as a means of self-expression. In the meantime, Tina embraces her gothic side.
There is some unpleasant news for Glee Club. In the meantime, Will exacts revenge on Sue, and Mercedes helps Quinn embrace her funky side.
Sue deceives the Glee Club when Regionals finally show up, perhaps jeopardizing their hopes of winning the title.