Giant Gorg

A group travels to Austral Island, a location erased from official records, to uncover its secret. The journey includes Tagami Yu, Dr. Waive, his daughter Doris, and a friend of Dr. Waive serving as captain. On the way, they are attacked by GAIL, a multinational corporation, and a criminal group led by Lady Lynx. Reaching the island, they are confronted by a mysterious creature before being rescued by a blue giant robot. The robot, known to locals as "Messenger of the God," fights off the creature and leads Yu to the island's underworld after evading GAIL's forces. There, Yu discovers an alien artifact and an alien that has been in a 30,000-year-long slumber.