Micki comes clean to Trey about her past and they question what it means for them in the future. After a heartbreaking talk, Micki realizes it might be time to start a new chapter. Meanwhile, Walker and Liam put their differences aside and agree to trust each other when Denise asks them to investigate a case. Bonham dresses up as Santa Claus for the annual holiday party.

While setting up protective detail on Trey, Captain James is shot and left in critical condition. Walker takes on the role of interim Captain and turns to an unlikely source for help.