Emi is a seventeen-year-old girl living in Shibuya. Her father is always away with work and she's grown listless. Suddenly, a twist of fate involving a certain magical item changes everything. A mysterious pencil, of all things, is linked to the appearance of heroes from another world! Could this be the start to the excitement she's so desperately craving, or is there something more?

Onigawara, the director of the International Secret Police Agency, looked forward to making Takeshi a top-notch criminal investigator. Takeshi was given training, which turned him into an all-around sportsman as well as martial arts expert. However, Takeshi's attitude toward crime-fighting was so incompatible with Onigawara's, that he disowned him. For a while Takeshi investigated crime alone; then he became a private detective's assistant and general handyman. Secretly, however, Takeshi obtained from a scientist a new artificial polymer, polymet, that was far stronger than steel. With this polymet Takeshi transformed himself into Hurricane Polymar, an invincible costumed hero.

Straight out of Tokyo Plus, a high-tech research center, arrives a new innovation of "Man Machine" system (Polymar) developed by the late Dr. Oregar. Tragically, Dr. Oregar and his efforts are dematerialized as the Catsharks, loyal subjects of Nova, steal this new technology for their own devious plans.

Miraculously chosen as the next Polymar, Takeshi finds himself thrust into the middle of the battleground, as he discovers his new role and purpose - to destroy Nova and his followers. He utilizes his karate skills comprised of spinning kicks and backfists with flight formula to defeat the Catsharks, only to have them re-emerge stronger then ever, led by the shrewd Nina. Once she gets Polymar out of the picture - Nova will be free to proceed with his insidious plan. It is a race against time, for Takeshi to save the Earth