Jessica McNamee as Theresa Kelly: a Chicago police patrol officer and Johnny's on-again/off-again girlfriend.Kevin Bigley as Brian Czyk: a new paramedic recruit.Clare: Johnny's openly gay paramedic partner and lifelong friend Kevin Daniels as Henry Isaiah 'Hank' St.Michael Mosley as Johnny 'Mousse' Farrell: a Chicago paramedic whose fear of commitment contributes to an on-again/off-again relationship with Theresa.The series follows the workday of three Emergency Medical Technicians with a fictional Chicago private ambulance company, named Eminent, and the unusual situations-often crude or humorous-people in need of their assistance are in.
