Summary: Mothra and her fairies return to Japan to warn mankind that they must return Kiryu to the sea, for the dead must not be disturbed. However Godzilla has survived to menace Japan leaving Kiryu as the nation's only defense.

Summary: Japan creates an artificial black hole device to trap Godzilla forever, but a test of the device creates new foes for Godzilla, car-sized dragonflies called meganula and their queen, Megaguirus.