-Jess, eager to bury her sorrows after her break-up with Nick, organizes a dance at her school.
-She drafts several teachers against their will to be chaperones, including Coach.
-However, on the night of the dance, someone locks up the gym where the dance is supposed to be with a padlock.
-The other teachers, who are irritated by the prank, go home -- leaving Jess and Coach to chaperone the dance by themselves.
-Coach calls in Nick, Schmidt, and Winston to come and help chaperone the dance.
-Schmidt runs into trouble with a mean middle school boy.
-Nick gets in over his head trying to convince some troublemakers that he's cool.
-A dozen middle school girls become obsessed with Winston and follow his every move.
-Someone cuts the power at the dance.
-Jess thinks that the Biology teacher is the culprit.
-But the real culprit is Wendy, an awkward student who does not want to attend the dance because she is unpopular.
-Jess and Cece talk to Wendy about dating, and commit to helping her have more fun at the dance.
-The gang re-group, rap briefly, and restore order to the dance.