Increasingly anxious about his impending marriage to Nat (Jones) and thoroughly bored with his day job as a wedding photographer, Theo (Messina) establishes a hobby: he's hired by clients to clandestinely snap voyeuristic photos of them as they go about their days. Things go smoothly until a sexy exhibitionist (Dohan) leads him into an all-consuming obsession. Stalking her day and night, the woman's mysterious public trysts send Theo reeling, forcing him to confront uncomfortable truths about his sex life at home. MONOGAMY is an acutely observed portrait of a relationship on the brink, a timely tale of masculinity in crisis in the face of fantasy and fear of commitment.