When a community theatre group are offered a royalty-free play - Murder Most Foul - from new playwright Phyllis Montague, the group welcome the chance to put the theatre back into the black for the first time in years. The play follows the actors through the rehearsal, dress rehearsal and finally the production of Murder Most Foul but unfortunately all does not go quite to plan. During the performance, anything that can go wrong does, and the madcap curtain call makes for a hysterical climax.