As the first day of high school approaches, Monse returns from writing camp to find that Ruby and Jamal are on the outs with Cesar.

Ruby becomes obsessed with planning the perfect quinceañera for Olivia, while Jamal finds an oddball ally in his quest to solve the RollerWorld riddle.

Cesar spends quality time with Oscar, Monse finagles a baby-sitting job, Jamal edges closer to the truth, and Olivia experiences a fashion crisis.

With Cesar's future on the line, Jamal, Monse and Ruby end up in a frantic search around town to find the one thing that might save him.

Partners switch on more than the dance floor at Olivia's quinceañera, but an act of mercy could cost the friends everything they hold dear.