With Christmas approaching, a struggling single mom finds herself working as a department store Santa Claus, as a real-life angel delivers good fortune and the possibility of holiday romance.

Set during the height of World War II, Horizon centers on Lauren (Bradley), a secretary at the FBI who begins a secretive investigation into files that have been stamped with the codename "horizon." The mysterious project provides links to the presumed death of her husband and the disappearance of a young girl. —deadline.com