Aunt Jack follows the madcap family of Norman Sable-Church. After breaking up with his boyfriend-since-college, Norman moves clear across the country, leaving his fathers, George (Andrew Dawson) and Jack (Charles Baran), in a tizzy. Months later, with George, a prominent gay activist and historian, in failing health, Norman returns home to make things right and to introduce his parents to his new partner, Andy. Although happy for him at first, Norman's parents are shocked and appalled to find that Andy is not who they wanted for their son. Tension breaks into an intergenerational confrontation about sexuality, identity, and monogamy.