Yanfeng, a successful white-collar professional, is given a terminal diagnosis—late-stage bone cancer. Just when all hope seems lost, an unexpected mutation grants him extraordinary abilities: enhanced senses, accelerated healing, and strength beyond human limits. But his new gifts come with terrifying side effects. What starts with bizarre cravings for raw meat soon spirals into uncontrollable behaviors—territorial marking, surges of aggression, and strange animalistic impulses. Even more horrifying, Yanfeng periodically loses control and transforms into a bloodthirsty, monstrous creature. Each time he changes, the hunger to kill and consume grows stronger, threatening to destroy everything he once held dear. As Yanfeng grapples with his impending doom and the horrors of his new reality, he must uncover the truth behind his mutation while desperately searching for a way to stop himself before it's too late. Can Yanfeng reclaim his humanity, or will the beast within take over completely?