Set in World War II, the film depicts the story of the real-life Japanese battleship, the Yamato, which is confronted in the Pacific Ocean by giant monsters, including the most fearsome of them all, Reigo.

Young Misato struggles to survive after suffering severe facial trauma. And yet, after the operation, his face will not retain the after-effects of the tragedy... Her big sister will try to protect her by all means, but she will not be able to do anything against the many murders that will take place, nor against this strange shadow that will begin to creep... like a ghost... of the sadly legendary deformed woman.

"Jonan City" is a rural town in the Kanto region. There were five young men who grew up in this small town. Katagiri Ren, Miyagi Taisei, Fujita Hideto, Takasaki Shinya, and Obayashi Yusuke. They were the 26th generation members of the Jonan Ikka biker gang, which has a long history in this town. They were known to the public as "delinquent". But above all else, these 18-year-old boys were bound together by a strong bond. Their way of life shone with the greatest brilliance, brandishing the "now" as their everything, their excess energy, and the crosses in their hearts that they could not bear.

When the Earth's ecosystem is disrupted due to global warming, a plethora of prehistoric sea monsters wage war on Japan. Led by the powerful Raiga, the monsters ravage the city of Asakusa.