Godzilla vs. Space Godzilla Synopsis & Summary

Godzilla must once again fight to protect his island domain (gee, you'd think he'd have installed a security system by now!) in this sci-fi adventure from Japan. While Godzilla has a new adversary in Mogera, a mechanical monster created to keep the Big G at bay, this gigantic robot is no match for Space Godzilla, a mutant alien creature who combines Godzilla's powers with that of the dreaded Biollante. Space Godzilla confronts the traditional, earthbound Godzilla in a battle royal, with Mogera and Little Godzilla on hand to help. - Mark Deming, All Movie Guide