Severide starts off on the wrong foot at his Office of Fire Investigation assignment when, despite orders, he reopens an old case. Herrmann is on a mission to discover what caused an apartment fire. Kidd finds herself burning the candle at both ends.
When a trendy new hair salon opens up right next door to Paddy’s, Dennis and Frank go on the offensive to stop women from cutting off their hair. Meanwhile, Mac is reunited with his childhood dog Poppins.
Strong Woman deals with a transgender athlete who has her own agenda, which causes big problems for PC Principal. Cartman, Stan, and the rest of the boys meet their match when some of the girls join their board games club.