When the boundary between flesh and machine collapses, who is the real monster?
In the era of the division of the galaxy, the three major alliances and the forces of Free Star City are fighting openly and secretly, and an older threat is awakening.
Arya - a wandering mechanic, her right arm is a killing tool imposed by her family, and her left eye is engraved with the mark of a defector.
Victor - a wanted mercenary, the forbidden genes of the ancient star gods flow in his body, and the dark experiments of the empire are hidden in his scars.
Isaac - the heir who controls the interstellar military and industrial empire, has the ultimate code buried in his brain that can destroy civilization.
The three met in the black market "Rust Iron Heaven" due to an accident, and were forced to join forces to fight against the empire's "Psychic Awakening Plan." They soon discovered that they were nothing more than Experiment Numbers 144, 145, and 146—living vessels designed to awaken the sleeping Star God.
