The player controls a young boy called Musashi, who lives somewhere in medieval Japan in the village of Arima . He is the son of the famous swordsman Miyamoto Musashi and a skilled fighter himself. One day he hears of a rumor that the evil wizard Kojiro, his father's archenemy, has apparently reared up his ugly head once again! Kojiro's demons invade the land, and threaten death and destruction. "I shall defeat Kojiro!" - says Musashi, - "and maybe even get laid"...

Musashi no Bōken can be described as Dragon Warrior set in feudal Japan, as apart from the distinct classical Japanese flavor demonstrated here, the games are very similar. Musashi travels over the world map, visits towns, buys weapons and armor, descends into dungeons, and fights enemies in turn-based combat viewed from a first-person perspective.