Lu Pingan, the strongest man in the underworld, gave up his position as Lord of the Underworld for his beloved Liu Mengxi and helped her ascend to the throne of the Underworld. The two had a spiritual daughter, Lu Nian, and they were originally a loving couple. However, in order to fulfill the wish of his former senior brother Gong Shaoyu, Liu Mengxi pretended to have amnesia to get close to Gong Shaoyu, and even sacrificed his own daughter's fetus. After learning the truth, Lu Ping'an was heartbroken and determined, signed the divorce letter, and took his daughter into reincarnation to reach the top again. Later, Liu Mengxi discovered Gong Shaoyu's hypocrisy and conspiracy, and was filled with regret. She gave up everything to pursue Lu Ping'an, but only received his indifferent response of "there is no need to look back once fate has separated", and finally stayed in the underworld with endless regret.
