This Japanese action-adventure is set in the 17th century when all forms of swordplay were banned. One fighter, an excellent swordsman believes the law is unfair. His brother keeps his opinions about the law to himself. The swordsman vents his frustration by cutting off the thumbs of an enemy. The fighter is then banished. To live, he becomes a thief. To restore the family's lost honor, the other brother is forced to challenge the fighter to a duel.

An adventurous and daring sailor sets sail to the castle of an ailing king to stop an evil premier, hungry for power and wealth, from succeeding the throne and marrying the king's beautiful daughter. Along the way, with the help of some courageous rebels and a lustful wizard, he must overcome the powers of a bewitching witch, a band of ruthless pirates, and the castle's Imperial guards. He must also free those kidnapped into slavery and restore the king's reputation.