In 1996, one year after Godzilla defeated Spacegodzilla, the King of Monsters' nuclear energy begins to run out of control. His rising temperature causes uranium deposits on Birth Island to ignite, destroying the tropical paradise. Although Godzilla soon surfaces, Little Godzilla remains missing. Soon after he is located, but the immense radioactivity released during Birth Island's destruction mutated the young monster even further, now standing 40 meters in height, bearing a resemblance of his father. After the creation of Destroyah, Junior is lured to Destroyah. After a battle that Junior won, he was killed soon after. Godzilla's heart is broken and fights Destroyah, killing him. After that, he finally melts down, causing the skies of Japan to fill with radiation, but the radiation is absorbed when Junior rises, all grown and fully developed into a new Godzilla, showing its legacy will never end.