Coming to a fantasy world, Gu Qingfeng transforms into a jailer at the Demon Suppression Prison of the Great Yan Dynasty. This once gloomy and terrifying Demon Suppression Prison, known as the "human purgatory", is plagued by bizarre occurrences; demons wail miserably every night, corpses transform into bizarre maidens, eye demons condense into world-prying treasured pearls, and fox spirits dance with bewitching shadows. All clues finally point to Gu Qingfeng, who smiles evilly and says: "Jiejiejie — Which of you demons should receive punishment today?"