After Zou Yu, a game designer, died from being overworked, he crossed over into the immortal cultivation game he had designed. He became Wei Buwang, the Demon Lord who killed the parents of Jiang Yunbo, the protagonist of the game. At first, Zuo Yu thought he would thoroughly enjoy his new life, but he ended up being forced to keep starting over from the beginning of the game because Jiang Yunbo kept getting killed. It turned out that Zou Yu may have become a Demon Lord, but he was still just an NPC in the game. Meanwhile, the unhinged Jiang Yunbo was the main character. Thus, Zou You embarked on a strange and perilous journey to help the main character grow (while also making her part of his harem)…