As Callie tries to wrap her head around Robert's change-of-heart, an ambulance shows up at the Quinn's house. Stef and Lena find themselves on opposite sides of several issues, including Lena's sudden decision to quit her job. Brandon is offered an opportunity to attend a prestigious summer music program. Mariana struggles when her dance team leader changes the lineup the day before the competition. Meanwhile, Jesus secretly attends Ana's AA meeting and is shocked by what he hears.