A man enters therapy crushed by regret over his past. And finds—with a little help from quantum physics—that maybe choosing differently isn't as simple as it sounds.

RJ is a new angel, who is given the chance to address his one regret, that he didn’t help his sisters reconcile while he was still alive. Returning to earth as a stranger, he gets each of them to revive The Holiday Stocking, their parent’s old tradition to encourage charity at Christmas.

Chelsea is an American visiting England for work. While inspecting an old estate for its real estate potential, she notices some strange lights in the cellar. She discovers a "portal" of sorts that shows her the past (end of 1700s) and the dashing owner of the old estate. When an accident occurs, the gentleman (Charles) comes through and gets stuck in the present day.