The French inventor Thomas Roch develops an explosive of previously unattainable explosive power, the effect of which breaks him up psychologically and he is then sent to a mental hospital. This is regarded as a showcase institution and is repeatedly visited by well-known people, including Count d'Artigas, who wants to get his hands on the super explosive himself. Roch and his keeper are kidnapped by d'Artigas to help him with his diabolical plans...
