
As the firefighters, rescue squad and paramedics of Chicago Firehouse 51 forge headfirst into danger, the choices they make can mean the difference between life and death. But from the relentless pressure of saving lives, an extended family is forged. When it's go time, Firehouse 51 lays it all on the line for each other. This high-octane drama from Executive Producer Dick Wolf offers an edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions.

Herrmann and Mouch prepare to take their officer exams; Cruz receives a chilling omen; Carver takes care of a dog after its owner is injured on a call.

In the face of adversity, Pascal searches for justice; Violet struggles to write a letter to Carver; Damon returns to the floater pool hoping to secure a permanent spot at 51.

Cruz's past comes back to haunt him; Severide prepares to teach an arson class at the academy; Mouch searches for a victim's next of kin.

Herrmann investigates the rise in missing fire hydrants and teams up with Kylie to track them down; Kidd's cousin comes to town, revealing surprising family history; Violet and Novak treat the victim of a birthday cake smash gone awry.