The series Chicago Fire season 2 tells the story of the most difficult and dangerous work - firefighters, rescue workers and paramedics fire station number 51 in Chicago. Despite the everyday heroism of men and women, and their dedication leads to a huge personal loss. The protagonist of "Chicago Fire season 2" show, Lt. Matthew Casey, a born leader and a real fire. However, the gap with the woman makes him take a fresh look at many things. In addition, after the death of friend and colleague Andrew Darden, Casey is constantly in confrontation with another member of the team - lifeguard Lt. Kelly Severaydom. They accuse each other of death Darden. But later they resign themselves to the loss of a friend and make peace. In place of the deceased Darden comes newcomer Peter Mills, who follows in the footsteps of his father, despite the objections of his mother. Along with the rest, under the leadership of chief Wallace Boden also has two paramedic: Gabriela Dawson and Leslie Shay. Each shift Chicago Fire team is faced with a question of life and death, sometimes they have to make difficult decisions, waiting for help and support from colleagues and friends, no matter what happens.