Takeshi Yoroi was trained for years as an officer of the International Secret Police Agency, including training in martial arts and several athletic skills. But his mentor distrusted his initiatives and eventually kicked him out of the force. Takeshi resurfaced as the assistant of the private detective Joe Kuruma. Secretly, Takeshi acquired a special suit with several different forms and weapons. He became the armored superhero Hurricane Polymar, engaging in a private war against organized crime.