Alex and Donna live the idyllic upper middle class American life: a stable marriage, debt-free, successful careers, comfortable and content...but something is missing. When Donna gives Alex an ultimatum one night to address the question he's never answered, Alex is forced to confront his unresolved romantic frustrations from his youth; Susanna, the one who got away. Alex thinks his duty is fulfilled, his past dealt with....until Susanna knocks on his door.