Aspiring doctor Marigaby tries to balance university life with her family's ambulance business. Her father, Ramón, is hiding something.

While Ramón struggles to keep his secret, Marcus—the older Tamayo brother—receives life-changing news.

An earthquake takes out the medical clinics, putting Marcus and Marigaby's skills to the test. Julito, the youngest Tamayo, faces his fears.

Marigaby's school discovers she's breaking the rules. Ramón's health issues worsen. Julito is presented with an ultimatum.

An unexpected death hits the Tamayo family. Julito makes a new friend. Marigaby's personal life gets complicated.

Marcus and Cris bring their all at a rap battle, where the fight gets personal. Marigaby clashes with Bernardo's family.

The Tamayos respond to a call that becomes more than they expected. Upset about Nallely, Marigaby makes a decision.

Marcus tells Ramón about Cris' pregnancy and their plans. A touch-and-go situation reaffirms Marigaby's passion for saving lives.

Ramón is determined to win back Lety. Julito refuses to give up his dream of being a paramedic. Marigaby is down to her last chance at school.

The Tamayo family encounter their most harrowing night in the ambulance.