In the drama series' second season, the men and women of Firehouse 51 face an uncertain future after learning that their station may be slated for a shutdown. Meanwhile, Lt. Severide (Taylor Kinney) is targeted by a serial arsonist; Lt. Casey (Jesse Spencer) becomes a temporary guardian to Andy's two young children after their mother is in a drunken-driving accident and arrested for manslaughter; and Mouch (Christian Stolte) runs for union president. In non-firehouse-related events, a shady individual threatens Molly's bar, and Herrmann (David Eisenberg), Dawson (Monica Raymund) and Otis (Yuri Sardarov) fight to keep it in business. The season includes a crossover episode with "Chicago PD."

A drama series following the firefighters, paramedics and rescue squad of Chicago Firehouse 51. In the first season, the group try to move on after a fire claims the life of a team member, and blame shifts between Lt. Matthew Casey (Jesse Spencer) and Lt. Kelly Severide (Taylor Kinney). Meanwhile, young firefighter candidate Peter Mills (Charlie Barnett) joins the staff. Eamonn Walker, David Eigenberg, Lauren German, Monica Raymund and Teri Reeves also star.