A young judo fighter struggles to keep his family together after his father is sent to prison. 14-year-old David could one day become a judo champion - if it wasn't for his explosive temper and aggression, which he finds hard to control. And this is the only legacy he received from his violent father, currently serving time in prison. David tries to live up to his mother's expectations while taking care of his 9- year-old brother. He gets a chance to change his life when he is invited to an important judo tournament.