Decades or even centuries after the "earth ringing" was stopped. Parady Island once prospered relying on the power of giants, but with the development of science and technology (close to or reaching the level of World War I), the power of giants gradually became outdated and difficult to control. Although the city wall still exists, it has become a historical relic and tourist attraction. The barriers between the inside and outside of the wall have gradually faded, but new conflicts have begun to arise. However, a mysterious power that is completely different from the ancestor Ymir and originates from the other side of the "Earth Demon" begins to quietly awaken.
