In 1950s Hollywood, Craig Barstow, the burned-out lead actor of failing sci-fi TV show: The World of Tomorrow, ends up believing he actually is the show's valiant main character: Captain Cal Armstrong, after a failed mob hit leaves him delusional. Now, with the mob on his tail and his tyrannical studio boss at his throat, he must find a way to save his show and his sanity, all before the final 5pm broadcast.