Ninja Strike Force (1988)

Gordon the ninja learns from his master that the ancient sword he carries has a great power locked within it. Should the leaders of the five ninja clans be killed, this power would grow to become an absuolutely invincible force. Shortly after sharing this knowledge, however, the master is killed by a member of the evil black ninja clan. Gordon must now seek out the remaining clan masters and warn them of the approaching danger before it's too late.