At a home for retired musicians, the annual concert to celebrate Composer Giuseppe Verdi's birthday is disrupted by the arrival of Jean (Dame Maggie Smith), an eternal diva and the former wife of one of the residents.

Members of a world-renowned string quartet struggle to stay together in the face of death, competing egos, and insuppressible lust.

A hostage taking goes slowly, horribly wrong. A sour note for the Thieves Quartet.