When heads of state gather at the G8 summit in Japan, Guilala -- the intergalactic monster that had been banished from the earth in The X from Outer Space -- returns to ravage the Japanese countryside and threaten the world leaders. Military strikes prove futile against the beast, but a reporter learns that one rural community possesses a strange ritual that might influence the creature. Minoru Kawasaki directs this campy satire.
For eighteen generations, samurai of the Shiba Clan have suppressed the evil intentions of the Gedoushu, malevolent spirits that enter the world of the living from gaps between buildings and other structures. Now, Takeru Shiba, the youngest head of the Shiba Clan must gather his four vassals in order to battle the Gedoushu under the revived Doukoku Chimatsuri as the Shinkengers.