Katharine Madrid, the picture of domesticity, is unmasked as a voracious adulteress when her husband's stealthy camera captures her in the act with their mutual friend. The graphic footage shows Katharine, the 'good wife,' unraveling into a sexual animal, her inhibitions shed like clothing on the bedroom floor. She's a willing participant, her body responsive, as she's filled and stretched by her lover, her moans echoing through the room, shattering the illusion of marital fidelity.