A thousand years ago, a devastating catastrophe struck when shape-shifting aliens known as Gauna ravaged the solar system. In response, humanity constructed massive spaceships, including Sidonia, to escape to a new planet. The narrative centers around Nagate Tanikaze, a teenager who evolves into a pilot of Sidonia's guardian robots, earning the nickname "Knight of Sidonia".

Nagate Tanikaze, a young resident of the spaceship Sidonia, embarks on a peri...