Unexpected events occur over a long weekend when Pat, a glamorous British born star of American soaps, returns home to plug her auto biography on television and meets, for the first time since they were teenagers, Margaret her plain, fat and frumpy younger sister. The meeting is painful for both sisters highlighting the vast differences in their lives and resurrecting painful memories of their unhappy childhood with their uncaring mother. The tabloid press smell a juicy story and a race ensues to trace the current whereabouts of the long lost errant mother...