Japan is thrown into a panic after several ships are sunk near Odo Island. An expedition to the island led by Dr. Kyohei Yamane soon discover something far more devastating than imagined in the form of a 50 meter tall monster whom the natives call Gojira. Now the monster begins a rampage that threatens to destroy not only Japan, but the rest of the world as well.

The surface of the Earth is under attack, thousands of people are killed in this unprovoked attacked. The cause, Princess Dragonmon and her army of monsters have decided to invade. Princess Dragonmon is an alien whose race has been hiding under us for centuries waiting to attack at the time is right. A doctor has been preparing for something like this and turns his assistant Rayma into the cyborg hero known as Inframan. Now only Inframan stands between the Earth and Princess Dragonmon but when a close friend is captured and brainwashed, can she be stopped with this inside man feeding her info?