A man and the seven samurais escorting him are killed at a tideland. The only evidence remaining is a sword cut in half. On a mission to track down the assassin, CHO Moon-gang accuses BU Yeo-pung, the head of Cheon-yu-moon clan, as the murderer, for the sake of justifying his cause. At last, BU Yeo-pung and Cheon-yu-moon meet the real assassin in the final battle.

A man and the seven samurais escorting him are killed at a tideland. The only evidence remaining is a sword cut in half. On a mission to track down the assassin, CHO Moon-gang accuses BU Yeo-pung, the head of Cheon-yu-moon clan, as the murderer, for the sake of justifying his cause. At last, BU Yeo-pung and Cheon-yu-moon meet the real assassin in the final battle.