Rodrigo Valenti has willed a winery and neglected house in Northern California to his great-niece Carol Valenti Alan. She and her husband Lex invite their friend Mimi Griffin, and her sister to the huge estate for a long weekend to explore investment possibilities. Tales of debauchery emerge as the faithful housekeeper bends under the pressure and begins to reveal the shocking details of Rodrigo's final years. The group realizes they are in mortal danger in the old house. Mimi leads the chase to uncover the killer before the killer can strike again.