Lucian Kane transmigrates into a vast interstellar world, only to receive a life sentence for two absurd crimes: helping smuggle oxygen and exposing his face in public. His destination is KL-21, a lawless frontier prison planet filled with the galaxy’s most violent criminals, alien gangs, enhanced warriors and monsters capable of tearing machines apart. As an ordinary human with no talent, Lucian appears destined to die the moment he arrives.
But ten days before reaching the planet, the game system that has been loading since his transmigration finally activates. Lucian becomes a Player who can gain experience, improve his attributes and evolve by killing enemies. After eliminating an alien prisoner aboard the transport ship, he discovers that hostile alien species even grant bonus experience. Instead of fearing the prison planet, he begins viewing every criminal there as a walking source of XP.
Upon arrival, Lucian is thrown into a brutal Battle Royale where tens of thousands of prisoners are hunted across ruined cities for entertainment and weapons advertising. He raids supply crates, kills alien warriors, hunts deadly Void creatures and rapidly grows from a powerless human into a Source Warrior. While other prisoners fight only to survive, Lucian deliberately searches for stronger opponents because every kill pushes him closer to his next evolution.
After obtaining a rare industrial core, he unlocks the Mechanist class and gains the ability to research, modify and control advanced technology. Weapons, machines and cybernetic enemies become resources for his growth. Within days, the prisoner everyone dismissed as a weak human becomes the most feared hunter on the entire planet.
Now Lucian must survive alien gangs, cybernetic warriors, monster swarms and the hidden forces controlling KL-21—while uncovering why this prison planet is secretly connected to a much larger interstellar conspiracy.