Maddie Wirtz is a high school senior living in the suburbs of Portland, Oregon. Her plans to coast through her last school year before college are waylaid when she meets another teenage girl who's a drifter, "Legs," who takes shelter from the rain inside her school. The same day she meets them, Legs convinces Maddie and fellow students Rita Faldes and Violet Kahn to confront Mr. Buttinger, a teacher who's been sexually harassing Rita and Violet. Maddie, Rita, and Violet flee after the confrontation turns violent, witnessed by student Goldie Goldman, who flees with them. Later, Legs finds Maddie at her house from the address in a notebook Maddie dropped in Mr. Buttinger's classroom. Legs spends the night at Maddie's house and bonds with her further in the morning before school.