The ambitious spiritual successor to Xenogears, originally planned to be the first chapter in an enthralling science-fiction hexology. 20XX A.D. A mysterious plate-light object was found at an archaeological dig around Lake Turkana, located in northern Kenya. The object, named Zohar, was responsible for the disappearance of Lost Jerusalem, forcing mankind to escape into outer space. T.C.4767 (4000 years later) The 117th Marine Division of the Galaxy Federation Army, with the space crusier Woglinde as its flagship, was on a mission to investigate the disappearance of planet Ariadne. The anti-Gnosis android KOS-MOS was deployed on the Woglinde in case of an attack by the mysterious enemy Gnosis. Shion Uzuki, the chief of Vector's First R&D Division, and development members were also on board for KOS-MOS's startup experiments. KOS-MOS's startup experiment was conducted repeatedly while the fleet continued their investigation, but the experiments were not going smoothly, and the unit was not ready for combat. Though frustrated with the failed experiments, Shion also felt resistance to KOS-MOS, left to her by her dead lover Kevin, waking up as a weapon. Assistant Chief Allen Ridgeley, who is in love with Shion, could only watch her silently. While investigating the area where the disappearance occured, the Woglinde found an object thought to be the Zohar and stored it. Finished with the investigation, the fleet left the area. With the mission safely accomplished, the crew breathed a sigh of relief. However...