Alles begann als Ryu eine Einladung nach San Francisco von seinem altem Freund und Traingspartner Ken erhält. Ryu verlässt somit seine Heimat Mikuni. Nach seiner Ankunft in den USA beschließt Ken sofort nach dem Essen Ryu die Stadt zu zeigen. In der Mount Fuji Bar geraten die beiden Freunde sofort in einen Kampf. Nachdem sie alle Gegner ausser Gefecht gesetzt haben, taucht ein weiterer unbekannter Kämpfer auf.
Ryu receives an unexpected letter from his best friend Ken Masters. The letter tells him to come to America for a visit. The two of them have not seen each other in years, and so this is the reason Ken sends the letter. Ryu, after thinking about it, decides to go to America at Ken's request. When he arrives at the San Francisco airport, he finds Ken. The two of them then drive home to Ken's place, relax a bit, then go out for the night on Ken's motorcycle. They go into the pub called Mt. Fuji, where they beat up some military thugs who tried to fight them after Ken wooed one of their dates. Afterward, the leader of the military thugs, Guile, enters the bar and sees what Ryu and Ken have done to his men.
Ryu va a far visita al suo amico Ken in America. Dopo aver combattuto con alcuni militari in un pub, appare dal nulla un nuovo misterioso sfidante.
Ryu recebe uma inesperada carta do seu melhor amigo Ken Masters. A carta diz a ele para ir aos EUA para uma visita. Os dois não se viam há anos, sendo está a razão para Ken enviar a carta.
Ryu , que todavía viven en el Japón rural, recibe una inesperada carta de su viejo amigo y combate -partner Ken Masters . Se invita a Ryu a visitarlo en el Estados Unidos , ya que no han visto desde hace muchos años. Ryu piensa acerca de la solicitud y decide viajar y ver a su mejor amigo.
