Lucy is a studious high school junior who dreams of attending the Sadie Hawkins dance with Tomás, a classmate who keeps to himself and sits behind her in Spanish class. After devising a way to get his attention, the two strike up a flirtatious friendship, setting off a chain of events that inspire Lucy to finally take the leap — but just when she thinks the hardest part is over, things take an unexpected, and mortifying, turn.