An up-close and personal view into the lives of everyday heroes follows the adventures of the men and women of Chicago Firehouse 51, the courageous firefighter, rescue squad, and paramedics whose actions make the difference between life and death.

United in the face of peril, the brave firefighters, rescue squad members, and paramedics of Chicago Firehouse 51 are pulled apart by issues beyond their control in the red-hot fifth season. Firehouse Lt. Matt Casey and Gabriela Dawson work to build a safe home for their growing family, even as their life-saving jobs demand their full attention. Rescue Squad Lt. Kelly Severride risks it all, and faces the consequences, while the crew confronts monumental changes