Su Bai was involved in the S-class strange incident "Ghost Bus" while handling a takeout order. The life-saving "S-class ghost control order" that originally belonged to him was snatched away by Zhao Tai. The system is awakened at the moment of death and the method of containing the ghost bus is deduced through 99 simulations. In reality, he killed the evil ghost, regained the ghost control order, and subdued the second evil ghost. Later, he was involved in the conspiracy and frame-up of the Zhao family. He used the loopholes in the rules deduced by the system to survive Lin Qinghan's interrogation and the Zhao family's pursuit with ease. He eventually uprooted the Zhao family and officially joined the special bureau, starting his own path to overlordship.