In an American desert town circa 1955, the itinerary of a Junior Stargazer/Space Cadet convention is spectacularly disrupted by world-changing events.

A group of heroic firefighters at Seattle Fire Station 19—from captain to newest recruit—risk their lives and hearts both in the line of duty and off the clock. These brave men and women are like family, literally and figuratively, and together they put their own lives in jeopardy as first responders to save the lives of others.

With her sister hours from being removed from life support, a young mother is offered an unexpected opportunity to make a trade.

Follows the personal and professional lives of a group of doctors at Seattle’s Grey Sloan Memorial Hospital.