Reilly Short (Genelle Williams) is nothing short of spontaneous. The free-spirit spends Christmas at a different destination every year, after choosing the location at random on a map. This year, she ends up at Mistletoe Lake (obviously), where she learns the hotel she booked is suddenly full and can no longer take her in. In comes young hero, Emma (Hattie Kragten), who offers her a spot on her dad's boat. The catch? Well, Emma's dad, Raymond Mitchell (Corey Sevier) is planning on selling his boat ahead of the town's annual Christmas Harbor festival, and it's now Reilly's job to convince him otherwise.