A 400-foot (122-meter) dinosaur-like beast, awoken from undersea hibernation off the Japanese coast by atomic-bomb testing, attacks Tokyo.

Mothra's egg washes ashore and is claimed by greedy entrepreneurs who refuse to return it to her fairies. As Godzilla arises near Nagoya, the people of Infant Island must decide if they are willing to answer Japan's own pleas for help.

Aliens from Planet X request the use of Godzilla and Rodan to fight off King Ghidorah, but have a better use for the three monsters. (Part of the "End of Solar System Sale" marathon block. No host.)

A latchkey child living in the industrial city of Kawasaki confronts his loneliness through his escapist dreams of Monster Island and friendship with Minilla.

Attempts to salvage Mechagodzilla are thwarted, causing an INTERPOL investigation that uncovers the work of a shunned biologist and his daughter, who's life becomes entwined with the resurrected machine.