In *Street Fighter Zero*, Ryuu suffers from the "waves of murderous intent," but finally overcomes them and becomes a true fighter in this moving story. Ken, now a father with a family, discovers a new strength. In order to experience that strength and explore a new path, Ryuu also sets out on a journey of training to find power of his own. Through mortal combat with the strange hermit Oro, the giant Hugo, the Chinese martial arts brothers Yun and Yang, and the English gentleman Dudley, what is the state of mind that Ryuu has reached? And who will be Ryuu's final opponent?