Katie is taken aback when she learns Taylor’s boyfriend Trip has been spending the night. Meanwhile, Greg is forced to separate the kids when Anna-Kat and Franklin both come down with mono. And Cooper feels neglected when Oliver starts spending too much time at the office.

Pops and Ruby are getting re-married! And Dre's intimate wedding plans go awry when Pops' brother, Uncle Norman, shows up unexpectedly for the festivities. Meanwhile, Ruby refuses Bow's offer to help with preparations until an unanticipated situation gives her an opening to save the big day

Brett and Mackey find their lives in peril. Casey and Brett tread in unfamiliar territory. Severide chases a memory while Kidd adeptly solves a firehouse problem. Ritter puts himself in harm's way during a harrowing call.

Jimmy plays a brand new Tonight Show game with Dan Levy called Best, Worst, First, then chats with Levy and Michael J. Fox before welcoming musical guest Julia Michaels.