Framed for his best friend's death and abandoned by everyone he trusted, Vell has spent months surviving on the streets as a homeless outcast. When a mysterious golden artifact grants him a system, he endures a brutal trial—running 80 kilometers until his body breaks—to awaken as a player. But instead of the overwhelming power he expected, Vell discovers his new ability is beast taming. Armed with only the power to evolve and control monsters, he must claw his way up from nothing in a world where players shoot lasers and summon lightning.