Deep beneath the sea, Godzilla sleeps only to suddenly have the earth's tectonic plates shift, the resulting energy engulfing Godzilla. He awakes in the Mesozoic era, dinosaurs fleeing from his towering form. A handful of tyrannosaurs attack Godzilla but are brushed away by Godzilla's tail. Elsewhere a titanic space monster hunts dinosaurs for its dinner. When it spys Godzilla, the monster senses a challenge and attacks. On the bottom of the sea, Godzilla awakens, the tip of the space monster's tail still clenched in his claws.