When Sophie Steinbeck finds out her fiance has cheated yet again, she desperately wants to call it off. But she doesn't want to be the one to do it. Her savior comes in the form of a professional objector, whose purpose is to show up at weddings and proclaim, "I object!" It makes perfect sense to her, and Sophie wants in. As Sophie and Max spend more time together, however, they realize that their physical chemistry is off the charts, leading them to dabble in a hookup or two. Then a groom-to-be hires Sophie to object, but his fiancee is the woman who broke Max's heart and Sophie grapples with the realization that she may have fallen hard for her partner in crime.