Liang Yichen, a young man with a harmless appearance, has the most ruthless soul of a killer in his heart. During a secret mission, he accidentally obtained a mysterious prop - the "Humanity Experimenter". This artifact, which could control the emotions and destiny of others, was supposed to be his most powerful weapon, but it completely lost control after a shocking experiment. When the experimental subject becomes a sorcerer, and when the chess piece backfires on the chess player, Liang Yichen finds himself trapped in an inescapable dilemma: every time he uses a prop, he loses part of his humanity; every person he controls leaves an indelible mark on his fate. The former hunter has become the prey, and he must find the source of his loss of control before he completely loses himself. However, a bigger conspiracy is waiting for him - someone has already laid a dragnet, waiting for him to step into the abyss step by step. In this game about human nature, destiny and redemption, can Liang Yichen hold on to the final bottom line of human nature? Or will he gradually become a monster of his own making?
