Virginia lives on a small farm with her horse, Diamond. She likes the company of men, but doesn't want a permanent, exclusive relationship. She's resolved to take no husband to her bed—without his wife's permission. She's mistress to successful businessman Peter, and model and mistress to artist Mick. Then she encounters the Southwicks... When Diamond falls ill, both her men want to marry her. How can she pay the vet's bills and retain her precious independence?