Because Xia Xin, a genius elder of the Dao Sect, secretly developed romantic feelings for a demon sect enchantress, he was sentenced to three years of wall-facing penance at Siguo Cliff. Unexpectedly, he awakened the Check-in System. As Xia Xin traveled around the world checking in everywhere, every sect he checked in at was flattened into the ground, which made Xia Xin momentarily suspect he had bound a demolition system. Even more absurdly, Xia Xin's gentle and virtuous wife turned out to be the decisive and merciless female emperor of the demon religion. Hiding their identities from each other and secretly competing on idol rankings, alongside the triggering of new check-in tasks, Xia Xin is about to embark on a new path of invincible crushing.