In the second season opener, some new faces challenge old ones in Glee club auditions. Meanwhile new and old relationships leave some happy and others alone.

A trip to the dentist for the Glee clubbers gives them hallucinations while Brittany's psyche comes to focus and they sing some of special guest star Britney Spears' greatest hits.

A life or passing situation and one Glee clubbers admission that they don't believe in God causes controversy for everyone.

The glee club works on a duet assignment, and Finn and Rachel plan to throw the competition so that Sam can have a shot at winning. Meanwhile, a love triangle between Mike, Tina and Artie develops.

The Glee kids perform songs from the Rocky Horror Picture Show.

After the Girls Leave the Glee Club, Mr. Shuester make them do 'Teenage Dream' to get the girls back.

After Mr. Schuester gets sick, a substitute teacher takes over the Glee Club and becomes a new love interest and competition for Will.

Sue's mother comes to town after years away which causes some revelations in the Sylvester family.

New Directions heads to the big Sectionals competition to go head-to-head against the Warblers and the Hipsters. While trouble brews between some of the young couples, Emma and Carl grow closer.

Finn tries to bring a little holiday cheer to McKinley High, and Artie discovers that Brittany still believes in Santa. Meanwhile, the teachers pick their Secret Santas, and one manipulative coach rigs the gift-giving in her favor.

Mr. Schuester and Coach Beiste devise a plot to bring together the warring glee club and football team factions. Meanwhile, Sue, desperate to win cheerleading Nationals, launches a dangerous plan to bring home a trophy, and the kids of New Directions tackle Michael Jackson's iconic hit "Thriller".

Love is in the air at McKinley High when the glee club sets up a kissing booth for Valentine's Day. Things don't go as planned, however, and hearts end up getting broken.

Sue gets musical when she starts a tribute band. Meanwhile, Rachel wants to elevate her social status and gets help from an interesting source when Brittany comes to her rescue.

At the school, Principal Figgins is worried about underage drinking and the glee club becomes involved in the program. However Coach Beiste and Will have some fun together.

When free-spirited substitute teacher Holly Holliday fills in for the absent sex-education teacher, she joins forces with Mr. Schuester to teach the kids of New Directions the facts of life. Meanwhile, Emma heads up the Celibacy Club, and she and Dr. Carl address some issues in their personal life

With Sue Sylvester coaching Aural Intensity, Blaine and the Warblers' dynamic set list and tough judges Tammy Jean Albertson and Sister Mary Constance, the kids of New Directions decide the only way to win Regionals is to write and perform their own original songs.

Fresh off their Regionals' victory the Glee club focuses on their next challenge: winning Nationals. Meanwhile Sue gathers a team to destroy New Directions which involves Vocal Adrenaline.

This special 90 minute episode features a tribute to Lady Gaga's "Born This Way." Prom night causes problems for McKinley High's couple while surprise dates and guest lead to more tension.

Sue begins to spread rumors throughout McKinley High by reviving the school newspaper. Meanwhile, April returns to invite Will on a road trip.

Prom madness abounds and a king and queen are named amidst the return of Rachel's ex and Vocal Adrenaline superstar, Jesse St. James.

An untimely passing rocks McKinley High while New Directions prepares for Nationals in New York City.

The kids of New Directions travel from Lima to New York City to compete in Nationals. While in the Big Apple, they take in all of the sights from Times Square to Broadway to Central Park.