The Shaw Brothers do ninjas. Solid fight choreography early as two rival kung fu clans meet in a martial challenge. The losing clan calls in the mysterious five elements ninjas, a Japanese group that destroys the rival clan using a variety of inventive techniques. A lone warrior survives and seeks ninja training. He later returns and we’re treated to some bonkers fight scenes packed with over-the-top violence and liberal amounts of Hammeresque blood. An entertaining ride but the lower production values and flatter performances pale next to the superior Duel to the Death.