A monster from outer space gets a less-than-warm welcome from a band of ancient warriors in this over-the-top exploitation picture from writer and director Seiji Chiba. In feudal Japan, a strange flaming object falls from the sky, and when reports of mysterious deaths follow, three ninja warriors are sent out to investigate – brave Yamata (Masanori Mimoto), stealthy Jinnai (Shuji Kashiwabara) and their silly sidekick Nezumi (Donpei Tsuchihira).  What the ninjas find is outside their previous experience – a bloodthirsty creature from another world that has arrived on Earth and plans to kill everything in its path. However, the alien didn’t count on the tenacity or the fighting skills of the ninjas, and they set upon the creature with the help of sword-swinging female ninja Rin (Mika Hijii). Of course, the alien didn’t travel alone, and it isn’t long before the warriors are making mincemeat of a whole platoon of beasts from another ugly world.