[Machine Translation] The human seed ship Sidonia has reached the Rem star system, home to the Great Shugaf Ship" the stronghold of the Gauna, the alien lifeforms that destroyed the solar system. With Toa Heavy Industries having completed the massive weapon known as the Graviton Beam Emitter," the offensive begins. However, the body of Fusion Individual No. 2, Kanata," is taken over, and Ochiai the scientist who caused the great catastrophe a hundred years ago is resurrected. With the hero, Nagamichi Tanikaze, unable to sortie due to injuries, Ochiai (Kanata) equipped with a graviton radiation emitter made from Ena makes his appearance. Sidonia faces imminent danger!