In 2147 AD, thirteen years after the outbreak of the "New Territory War", the separation of forces caused by the depletion of the earth's resources has entered a fever pitch. The "Black Blade" special force formed by the Human Alliance is a sharp blade that walks on the edge of law and morality, specializing in carrying out "unrecordable" dark missions. Lu Chen is the tactical core of the third team of the "Black Blade". He is proficient in mecha control and information penetration, but he hides an erased memory - his identity as a survivor of the "Oasis Massacre" ten years ago.
During a mission deep into the hinterland of the hostile force "Red Tide", the team encountered an ambush and teammates died tragically one after another. Lu Chen discovered that the information about the ambush came from within the alliance. In order to find out the truth, he was forced to wander between the "Black Blade", "Red Tide" and the mysterious third-party organization. While using iron and blood to remove obstacles, he faced the cruel truth of the "Oasis Massacre" in the memory fragments. Loyalty and betrayal intertwined, survival and morality collided. On the dark battlefield of the future, Lu Chen gradually uncovered the bloody secrets of the alliance's maintenance of rule, and every choice he made pushed himself deeper into the abyss.
