Alien vs. Ninja

“Only one can win.”

Yamata (Masanori Mimoto) is a ninja who trains with his clan in a Japanese forest, and he is about to find that the swords they carry were made for human enemies. Seiji Chiba sends a comet into those woods, and the creatures that crawl out start moving toward the clan's village. Yamata and his fellow ninjas have to stop them before they arrive, because everyone living there would die.