Synopsis
There was a band of great Ninja warriors called the Iga saw a fireball blaze across the sky. It turned out as slimy aliens from the stars! These aliens kill and feast on the Iga warriors. Yamata and his warriors who barely survived, swear to avenge their comrades" deaths and hunt down the aliens. However none of the Ninja weapons have any effect on the aliens so the Iga have a few more Ninja tricks up their sleeves...