Kristen Stewart stars as Abby in "Happiest Season," a riotous festive rom-com about two women in a relationship who are spending the holidays together for the first time. When Abby is invited to tag along with her girlfriend Harper to her family Christmas celebrations, she immediately procures a ring to lock in their love for the long haul. But when Abby finally comes face-to-face with Harper's parents for the first time, she realises they have no idea the two of them are together, let alone that their daughter is a lesbian. Patience is tested, and secrets are bound to come out in this festive film.