Johnny is the eager-to-please ASM and understudy to arrogant actor Roger Kite,who is due to play Andy Warhol in 'The Fifteen-Minute Factory',an upcoming West End production. Roger treats Johnny abominably,forcing him to make his coffee,sort his fan mail and - particularly - keep him away from the theatre's lucky mascot,a black cat called Diddly. As the opening night approaches Kite's attitude to Johnny worsens,causing the young man to hear voices urging him to prevent Kite from starring in the opening. And so,thanks to a faulty trap door,this happens - though did Diddly also play a part in the accident?