Jay agrees to sub in on Cam's bowling team, not knowing it's an all-gay league. Phil and Clair have an unexpectedly nice time with their neighbours, and Gloria and Mitch agree to go out with Haley.
Gloria, Claire and Hayley do a read-through of Manny's latest play. Cam becomes angry when he sees someone destroying his Fizbo costume.
The team transport the victims of a terrible chemical leak to Chicago Med, where a bad situation quickly turns seriously worse.
The investigation of Chief Boden intensifies, so the pressure is on Firehouse 51 to find evidence that could clear his name.
Severide and Stella keep an eye out for Grant; Louie has Dawson questioning her dangerous career path; Casey's relationship with Susan Weller cools down; tensions between Borrelli and Boden reach a boiling point.