A comedy about a religious mother who is determined to stop her gay son's wedding. But her plans go awry when she accidentally befriends his fiancé and begins dispensing relationship advice.

Susan Morrow receives a book manuscript from her ex-husband – a man she left 20 years earlier – asking for her opinion of his writing. As she reads, she is drawn into the fictional life of Tony Hastings, a mathematics professor whose family vacation turns violent.