 Ruth has everything. A large, warty body, a standard house in the suburbs, two whiney children, a dog, a cat and a guinea pig. She also has Bobo, her unfaithful accountant husband who resents her very existence. Bobo wants, and is wanted by, Mary Fisher. Mary Fisher lives in a lighthouse by the sea and writes about love. When Bobo leaves Ruth for the novelist, she decides that Mary Fisher doesn t know the first thing about love. Ruth intends to teach her.