In the near future when people become uninterested in boxing and similar sports, a new sport is created - Robot boxing wherein robots battle each other while being controlled by someone. Charlie Kenton, a former boxer who's trying to make it in the new sport, not only doesn't do well, he is very deeply in the red. When he learns that his ex, mother of his son Max, dies, he goes to figure out what to do with him. His ex's sister wants to take him in but Charlie has first say in the matter....