Born on the same day to twin sisters, France (Hywel Bennett) and Margaret (Jane Asher) were virtually raised as siblings themselves. During one summer, they choose lovers for each another (Leigh Taylor-Young and Sven-Bertil Taube), and the foursome spend three passionate months together. But none of them expect the romantic and dangerous entanglements that will follow. Robert Ellis Miller helms this adaptation of the novel by Janice Elliott.