Through continuous improvement of racing skills, understanding of the concept about racing, the meaning of life and friendship, the racing boy Higashino Ji with no ambition at all has gradually grown into the most reliable partner and neighborhood. And at the same time, he also gradually grows into the most powerful racer… (Source: WeTV)

Two martial artists are brutally killed by a team of assassins, leaving their wards, a young boy and girl, defenseless. A martial arts master dispatches of the assassins, sparing their lives, and decides to take them in. He raises them and teaches them martial arts.