Herrmann goes to court to testify against Freddie, but when the perpetrator's father reaches out to beg forgiveness for his son's malicious attack, a tormented Herrmann is left to figure out what to do. Following the aftermath of the recent tornado, Lt. Casey learns the makeshift shelter housing victims is on the brink of shutting down. At the request of Alderman Colin Becks, Casey attends a fundraiser and is thrown into the spotlight, only to quickly discover that his good intentions might not have the impact he was hoping for. Dawson and Brett feel the repercussions after telling Boden about Chili's recent erratic behavior. Meanwhile, Severide helps Agent Alex Ward solve a homemade explosives case, and Otis receives a welcome surprise.