It's the 25th century, and the American President has taken over the world. Meanwhile, after a cleaner unplugged his cryogenic freezing machine by accident, Detective Inspector Capstan wakes up to find that he's been in a state of suspended animation for more than 400 years. As he's forced to adjust to life in the future, he finds himself reinstated as a policeman, and together with the great-great-great-great-grandson of his former subordinate, Sergeant Dewbush, he's put on the case of a missing cow.