Chelsea Higgins is heading into the holidays at the helm of a thriving dog training business, and she's got a mellow dog at home to keep her warm at the end of the day. What more could she need? Enter certified gym bro Andrew Gibson, who also wants to expand into the vacant space Chelsea's been eyeing. When a run-in with Andrew's lawless dog leaves Chelsea with a bum wrist, the two strike a deal: Andrew will help Chelsea rehab the injury if she'll work with him to train his adorably uncivilized boxer. As she gets to know Andrew, Chelsea can't help wondering if they are training for keeps, or if this unexpected Christmas gift is just too good to be true.