Sensitive elementary-school gym teacher Carey (Marvin) has just informed real-estate developer Paul (Covino), his best and possibly only friend in the world, that he's slept with Julie (Dakota Johnson), Paul's wife. The night before, the couple had revealed to Carey, who'd just broken up with his own wife, Ashley (Adria Arjona), that their marriage was an open one; then, Julie and Carey wound up alone together and, well, one thing led to another.