After discovering their significant others are siblings, two resentful exes must spend Christmas under one roof — while hiding their romantic history.

Fed up with being single on holidays, two strangers agree to be each other’s platonic plus-ones all year long, only to catch real feelings along the way.

In late 1967, a young orphaned boy goes to live with his loving grandma in the rural Alabama town of Demopolis. As the boy and his grandmother encounter some deceptively…