2003. After four years of scrupulous preparation under the prime minister, a new invincible robot, Mechagodzilla®, has now reached completion, armed with various weapons, including the most powerful gun in history that can destroy anything in the world. Akane Yashiro is transferred to join the Mechagodzilla® team as an operator who controls the mechanical monster. As soon as Mechagodzilla® starts on its test run, the huge shadow of Godzilla® begins to rise from the depths of the ocean...The battle of the century is going to take place between Godzilla® and Mechagodzilla®