Meet the firefighters and paramedics of Firehouse 51 as they face the intense demands of the job while dealing with personal losses, rivalries, and the weight of life-or-death decisions. Brotherhood and loyalty are forged in fire.

Molly Gunn, the freewheeling daughter of a deceased rock legend, is forced to get a job when her manager steals her money. As nanny for precocious Ray, the oft ignored daughter of a music executive she learns what it means to be an adult while teaching Ray how to be a child.