Once popular opera diva, Jean Horton (Maggie Smith) creates a stir with her arrival at Beecham House, a home for retired musicians. As residents plan the annual fundraiser, they realize that Jean completes the original Act III Quartet in the opera Rigaletto that they had sung to great acclaim years ago. Residents must convince the aging Jean to sing and Jean must reconcile with her reluctant ex-husband (Tom Courtenay).