9-1-1

Athena is pulled into a mysterious murder investigation when a man arrives at the station to report his own death. Meanwhile, the 118 races to the site of a car crash involving a mother and son.

The 118 must account for every decision made during a recent fire call when the team's actions are investigated for possible mistakes. Meanwhile, Buck works behind the scenes to support his team as he waits to learn if he can return to the station.

Buck is faced with his past after an electrical emergency call. Meanwhile, Maddie learns to navigate her working relationships now that she has become a supervisor.