A series about brave and devoted people who work as police officers, paramedics, and firefighters on the 'third shift'— from 3 to 11 p.m.— and for whom the meaning of daily work is to safeguard the safety of the streets and to help everyone in need. The police officers and EMS personnel in this close-knit team know each other well, sometimes a little too well, because they work side by side in the harsh conditions of a big city.