Riki-Oh - Collection

The story of a young man with the strength of 50 men who finds himself inside a harsh prison run by an evil assistant warden and the head boss who secretly has the ability to transform himself into a "Hulk" type monster. Riki, who is also secretly on a quest to find the hidden opium garden the prison warden has been growing, will learn something about himself that will change his life forever.

Riki must enter into a fighting tournament to save his brother, Nachi from a madman general called Washizaki who has the magical sword power. The two fighters are reunited after many years. The story starts soon after the original movie.