The son of a world famous mystery writer, Jimmy Kudo, has achieved his own notoriety by assisting the local police as a student detective. He has always been able to solve the most difficult of criminal cases using his wits and power of reason.

Makunouchi Ippo is an ordinary high school student in Japan. Since he spends most of his time away from school helping his mother run the family business, he doesn't get to enjoy his younger years like most teenagers. Always a target for bullying at school (the family fishing business grants him a distinct odor), Ippo's life is one of hardship. One of these after-school bullying sessions turns Ippo's life around for the better, as he is saved by a boxer named Takamura. He decides to follow in Takamura's footsteps and train to become a boxer, giving his life direction and purpose. Ippo's path to perfecting his pugilistic prowess is just beginning...

As police inspector Yamato Kansuke pursues a certain man in the snowy mountains of Nagano, a shadow suddenly appears in his field of vision. While he's distracted, a rifle bullet fired by someone grazes his left eye and causes an avalanche accompanied by a roar. Ten months later, Kansuke, having miraculously survived the avalanche, receives a report that a researcher at the Nobeyama National Astronomical Observatory has been attacked.