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.

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".