The end is approaching, and something strange is coming. Zhang San is accidentally bound to the "Outlaw Outlaw System" and needs to accumulate sin points through sanctioning crimes to become stronger. He successively experienced the crisis in the mental hospital and the strange dungeon of his home, and was later recruited by the Strange Management Bureau and involved in the strange dungeons such as Shangbu Middle School and the Zoo. In the dungeon, Zhang San relied on system skills and phantom assistance to cooperate with his teammates to decipher layers of strange rules and reveal the truth behind many cases. While adhering to the bottom line of the law, he uses the system to continuously unlock new abilities, struggling to survive in a world filled with weirdness, and gradually approaching the core secret of the weirdness.
