Three years into our marriage, Mary and I—sweethearts since college—have fallen into a sexless routine because of my NTR fetish. Desperate to watch her with another man, I discover a members-only swingers bar where husbands let strangers fuck their wives. Membership requires bringing a partner, so I persuade Mary to come under the promise that we will only watch. Once inside the forbidden club, however, the night begins moving far beyond our agreement.