過去に撃退した怪獣が、人や物をすり抜けて彷徨い歩く事案が立て続けに起こる。現場には必ず謎の男が現れ、大きな剣で怪獣を消し去っている。
この原因を探るためゲントが怪獣出現予想ポイントに先回りすると、謎の男・宇宙侍ザンギルが現れ、ゲントと話がしたいという。ゲントは、ザンギルから彼の秘密について知ることになるが…
Kaiju that have been defeated already start making a reappearance. However, they can walk right through people and obstacles. Everytime this occurs, a mysterious man with a big sword shows up and defeats the kaiju. Gento in an attempt to solve the mystery, tries to get ahead of the man by showing up at the next anticipated point of kaiju reappearance. There, he meets the mysterious man, Zangill, who supposedly wanted to speak with Gento. Zangill then reveals a secret about himself...
