Cady Heron is a hit with the Plastics, an A-list girl clique at her new school. But everything changes when she makes the mistake of falling for Aaron Samuels, the ex-boyfriend of alpha Plastic Regina George.

Victor makes his choice between Benji and Rahim. Mia and Andrew reunite with her estranged mother to get answers. Felix and Pilar begin their new romance, while Lake and Lucy spend the night getting closer.

Kate has a huge crush on Jason, her classmate. And as she tries to reunite with him during her senior trip, things get a little messy.