When Wang Buju accidentally traveled to another world and became a hungry homeless man, he activated the "Justice System" by rescuing a bullied girl. He gained power through the system, but he didn't know that the girl he saved was actually the Duke's daughter Lina. In order to gain a foothold in a strange world and gain the energy of justice, Wang Buju became Lina's bodyguard, punishing evil and promoting good along the way - fighting off gangsters, fighting against corrupt city guards, and confronting the evil city lord. He gradually became stronger through the power of the system, and while walking with Lina, he found his own path of righteous survival in the intersection of power and morality.
