Magnus Carstens, an eminent glaciologist, recently had to change his life: he's become his nephew Jakob's guardian after the boy's parents died in a plane crash, he's taken a new job as a park ranger, and he's moved them to Mistletoe, Wyoming, so he can offer a stable home to Jakob while still contributing to science. There he meets Lance Rivera, a disillusioned physical therapist who is working in his sister's store to make a living after his lover took off with all their money. When the two men come together—literally under the mistletoe—both realize all they really want, despite adversity, is a family to love.