Austral Island lies 2,000 km south of the Samoa Islands. The island had been removed from official records, prompting Tagami Yu to set out to uncover why. He sailed to the island with Dr. Waive, his father’s friend, his daughter Doris, and a captain who is also a friend of Dr. Waive. On the voyage, the international conglomerate GAIL and the gangster organization Cougar Connection, led by Lady Lynx, attacked them. They reached the island, but a mysterious monster suddenly assaulted them. As they faced certain death, a blue giant robot appeared, destroying the monster and saving them. The robot’s existence was far beyond human comprehension…