The highly anticipated first season of GLEE follows an optimistic high school teacher, Will Schuester (Matthew Morrison), as he tries to refuel his own passion while reinventing the high school's glee club and challenging a group of outcasts to realize their star potential. With harsh criticism from everyone, including Will's tough-as-nails wife Terri (Jessalyn Gilsig) and McKinley's egotistical cheerleading coach Sue Sylvester (Jane Lynch), he is determined to prove them all wrong and lead the glee club to the greatest competition of them all: Nationals.
Will Schuester an optimistic high school teacher, tries to reinvent the McKinley High School's glee club, while reinventing himself. He challenge a group of outcasts to realize their true star potential, while facing harsh criticism from everyone in the school.
Will finds out that he must recruit more people for New Directions in order to show up at Regionals. Meanwhile, the Gleeks are none too happy about the song selection and Finn and Rachel seem to hit it off.
Will battles with his lack of confidence when Rachel questions his ability to lead the glee club. He forms the Acafellas, an all-male acapella vocal group, as an outlet for his singing talent. Yet Will spends more time building his own confidence than he does with the glee club.
Kurt joins the football team just to impress his father. Finn and Quinn's relationship get a shocking development. Rachel thinks her star is fading when Tina is given a better part during rehearsals which causes her to leave. Sue continues her schemes to dismantle the glee club.
Will thinks the glee club desperately needs more of an edge, so he brings in his former classmate, April Rhodes (guest star Kristin 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.
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.
While Will and Sue don't agree on the direction of glee club, they both put on a happy face for Principal Figgins. Sue learns from her Cheerio spies that the minority students in glee don't feel like they are being heard. This might be a way for her to divide and conquer.
The Slushie War has commenced at McKinley High, but for the first time, Finn and Quinn are on the receiving end. Now that they are in glee club and their pregnancy secret is out, their status has dropped.
With Quinn's baby bills mounting, Finn promises to get a job to support her. Glee also needs money for a bus that can transport Artie's wheelchair to Sectionals. Will proposes they hold a bake sale, but no one wants to participate. Artie is dejected, so Will forces the rest of the squad to use a wheelchair for the week so that they will all know what it's like to live in Artie's shoes.
Will has the glee pair off to learn to express emotions through ballads. He's uncomfortable when Rachel draws his name and chooses the romantic "Endless Love" as their duet. As she sings, Rachel starts to realize how "super, super cute" her teacher is. Yet Will recognizes the look on her face...
As the "Fine Arts Administrator or something," Sue asks Will for the set list for Sectionals. Then when Sue requests the names of the participating schools, Will suspects that she is leaking information to the competition. He pays a visit to Grace Hitchens at the Jane Addams Academy and asks her point blank if Sue gave her their setlist. Hitchens denies this, but is confident her girls will win anyway. Feeling guilty, Will offers Hitchens' team the use of McKinley's auditorium for a glee scrimmage.
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. That is, everyone except Rachel, who wants her legacy cemented in print. Meanwhile, Quinn makes it her mission to be in the Cheerios yearbook photo, and Will and Terri's relationship is shaken to its core.
Rachel, on a mission to tell Finn that he is not the father of Quinn's baby, tries to hint to the glee kids that Puck is actually the father with the hope that they'll tell Finn, but they already know and conspire to keep Rachel from telling Finn. Rachel tells Quinn that babies of Jewish parentage are at risk for a horrible genetic disorder, with the hope that Quinn will talk to Puck about it.
Fresh off their monumental win at Sectionals, New Directions is on top of the world. With an extra spring in their step, they get to work on new numbers for Regionals. But when Rachel (Lea Michele) and Finn’s (Cory Monteith) budding romance hits a bump in the road after she becomes involved with a competitor, Jesse St. James (guest star Groff), it threatens to derail the entire club. Mr. Schuester (Matthew Morrison) pays a visit to Shelby Corcoran (guest star Menzel), coach of Vocal Adrenaline, to confirm Jesse’s motives. Meanwhile, Will is newly single, but is he ready to take his relationship with Emma (Jayma Mays) to the next level? And to top it all off, Sue Sylvester (Jane Lynch) returns from her condo in Boca with a renewed focus on destroying Will and disbanding the glee club.
Mr. Schuester (Matthew Morrison) is concerned that the girls in the glee club are being disrespected and bullied by the guys. Looking to Madonna and her musical message of equality as inspiration, he challenges the entire team to choose Madonna songs as their next assignment in the hopes that the girls embrace her strength, independence and confidence and that the guys will see the error of their misogynistic ways. The glee club takes the assignment to heart as they perform some of Madonna’s greatest hits, including “Express Yourself” and “Like A Prayer.” Meanwhile, Kurt (Chris Colfer) and Mercedes (Amber Riley) give Sue (Jane Lynch) a vote of confidence with a makeover that is definitely.
Sue demands that new Cheerio Mercedes must wear the proper uniform, including the short skirt. Threatening to kick her off the team, she wants Mercedes to lose 10 pounds before Sue's interview with Splits Magazine in a week. She also tells Kurt to lose weight as well.
Mr. Schuester (Matthew Morrison) starts an investigation when a salacious list about members of the glee club circulates the halls of McKinley High. Meanwhile, Sue (Jane Lynch) is mortified when a video of her performing the Olivia Newton-John classic “Physical” surfaces.
When a sore throat affects Rachel’s singing (Lea Michele) voice, she goes into panic mode. Meanwhile, Kurt (Chris Colfer) tries to change his persona to impress his father, and Puck (Mark Salling) makes a strategic move to elevate his social status.
In an episode directed by Emmy Award winner Joss Whedon (Buffy the Vampire Slayer, Dollhouse), Mr. Schuester’s former high school nemesis (guest star Neil Patrick Harris) causes trouble for the Glee club. Rachel struggles with a life-long personal issue, and Artie’s (Kevin McHale) dreams take him on an adventure. Additional guest stars include Molly Shannon, Idina Menzel and Jonathan Groff.
The Glee club goes gaga.
The glee club gets some news that’s sure to rattle a few nerves. Meanwhile, Quinn connects with her “funky” side with a little help from Mercedes, and Will gets revenge on Sue.
The moment New Directions has been waiting for has finally arrived: it’s time for Regionals! But when Sue (Jane Lynch) pulls a fast one on Will (Matthew Morrison) and the glee clubbers, their chances at the title could be compromised. Meanwhile, Quinn’s (Dianna Agron) life changes forever.