Su Qiqian, a modern social animal, died suddenly and traveled through time to become a federal S-class guide, but was sentenced to exile in the Black Tower due to the evil deeds of the original owner. After being bound to the "reverse dog training" system, she abandoned her vicious persona and used gentleness, comfort and wisdom to deal with the crazy sentinels. While purifying pollution and improving mental strength, you can solve the conspiracy to murder the original owner. In the dark world where sentries and guides coexist, you can unlock your own loyal dog and embark on a path of counterattack and self-rescue.