Battle To Save The Earth!
Invaders from the third planet of the Black Hole plan to take over the Earth with their powerful 400-foot tall robot Mechagodzilla!
Armed with an arsenal of lasers and missiles, Mechagodzilla lies damaged on the ocean floor from an earlier battles with Godzilla. The aliens enlist the aid of a disgruntled scientist Professor Mafuni to repair the damaged Mechagodzilla and send the newly discovered underwater dinosaur called Titanosaurus against Godzilla. Titanosaurus is telepathically controlled be the professor's cyborg-daughter Katsura, making the odds for Godzilla's chances for victory slim. Luckily, a weakness in Titanosaurus is discovered giving the edge in the battle to save the world!