Barbara Köster is suddenly alone: her baby daughter Leonie moved out when she was eighteen, as did her husband Walter years ago, who left the family for a younger woman. At 58, Barbara is left alone - alone in a house that is too big for her, alone in a job that doesn't fulfill her and alone with the stale feeling that she has missed out on something in life.

Film student Willie's final project will be a documentary on her parents' first encounter in 25 years. But neither of them has the slightest inkling of how fundamentally earth-shattering the afternoon will turn out to be.