The Play That Goes Wrong is a hilarious "play-within-a-play" farce about the Cornley Polytechnic Drama Society's ambitious opening night of a 1920s murder mystery, The Murder at Haversham Manor, where everything that can go wrong, does—from collapsing sets and forgotten lines to actors getting injured, missing props, and a corpse that won't stay dead, all while the amateur cast desperately tries to reach the final curtain call.