Ben Mendelsohn stars as Lewis Riley, an unemployed young man who applies for a job as a director/drama teacher at a mental hospital. He lands the job and finds himself directing a production of the Mozart opera Cosi Fan Tutte, an elaborate, demanding piece of theatre, an opera in Italian. And it is going to be performed by a cast that he must select from among the patients, who only speak English.One of the patients, Roy (Barry Otto), sweeps everything along before him, organising auditions, selecting cast members, and criticising the director. The cast chosen includes three women: Julie (Toni Collette), Ruth (Pamela Rabe), and Cherry (Jacki Weaver) and two men: Henry (Paul Chubb) and Doug (David Wenham). The musical director is Zac (Colin Hay). The enthusiasm of Roy infects the group, and they charge headlong into a memorable production.Alongside the story of Lewis, the theme of Cosi Fan Tutte is explored as it relates to his personal life. Lewis's relationship with his girlfriend Luc