The Ninja world is set ablaze when the mystical "Spirit Sword" is stolen by the Black Ninja Cal, giving its possessor the ultimate power of destruction. When the leades of the five most powerful clans are murdered, the hunt to track down and retrieve the sword is on. A titanic battle begins between all six clans, demonstrating all the skills of the ancient techniques. Hong Kong cut and paste edit of the 1981 Taiwanese Film "飛越補習班" (Kuo-Hao Crams for College) with new ninja scenes.

"Raymond's father, the long-time leader of the Scorpions, plans on "retiring" and turning over the business to his young son an innocent newcomer to the crime business. The leaders of other gangs discover these plans and eliminate the leader of the Scorpions causing his son to flee for his life. Meanwhile, the turf is taken over by Dragon, the Big Boss, who plots to eliminate the other gang leaders-one by one. But Raymond must return to the village to avenge the death of his father and fight for control. Who will become the new leader of the village? A combination of action, adventure and intrigue to the brutal end!" - VHS Back of the box description. Hong Kong cut and paste edit of the 1986 Korean Film "오사까대부 " (Osaka Godfather/Big Brother In Osaka) with new ninja scenes.