Godzilla : Monster of Monsters

In the year 2XXX A.D., Earth is under attack from the aliens of Planet X. Armed with monsters of terrible destructive force, the invaders establish bases on every planet of the solar system. These monsters include the foes Gezora, Moguera, Baragon, Varan, Hedorah, Gigan, Mecha-Godzilla and King Ghidora. To combat the menace, Earth sends two of it's own monsters, Godzilla and Mothra, in order to drive back the invaders of Planet X.