In The Drowsy Chaperone, a modern day musical theatre addict known simply as 'Man in Chair' drops the needle on his favorite 1928 musical comedy, The Drowsy Chaperone. From the crackle of his hi-fi, the musical magically bursts to life on stage, telling the tale of a pampered Broadway starlet who wants to give up show business to get married, her producer who sets out to sabotage the nuptials, her chaperone, the debonair groom, the dizzy chorine, the Latin lover and a pair of gangsters who double as pastry chefs.