Lt. Severide confronts Chili about his suspicions regarding her erratic behavior, but she doesn't take too kindly to his intentions. Members of the firehouse rally around Casey, who they believe is a perfect candidate to run for the position as Alderman. Jimmy faces off against Antonio in the first annual "Battle of the Badges" boxing match.
Elenco: Jesse Spencer , Taylor Kinney , David Eigenberg , Joe Minoso , Christian Stolte , Eamonn Walker , Yuriy Sardarov , Kara Killmer , Monica Raymund , Miranda Rae Mayo , Charlie Barnett , Lauren German , Annie Ilonzeh , Alberto Rosende , Dora Madison , Steven R. McQueen , Daniel Kyri , Hanako Greensmith .