Ryan almost ends up getting herself killed when she refuses to abandon a boy trapped in a shaft filling with water. Michael's father has a heart attack and Michael tries to hold the company together despite his younger brother. Megan is upset that Michael can't confide his feelings in her, and turns to an exboyfriend for comfort. Wick saves an actress from a rubber suit stuck to her skin from the heat, and gets bit by the acting bug.
Wick Lobo and Michael Bell welcome back their partner, Kathleen Ryan, after a stress-related leave of absence. They save men from a building that exploded. Ryan makes a heroic save of a man in a downed airplane that falls down a mountain. A woman that the team has visited before dies from being shot by her boyfriend.
Stations 27 and 77 are playing pranks on each other. A Russian woman's grandfather has chest pains. The squad rescues a teenager who falls while trying to hang a banner at his high school. Wick, Michael, and Ryan are caught in sniper fire while later answering a false alarm at the same high school. The shooter shows up at the station. Ryan deals with her ex-boyfriend.