In Lin'an in the Southern Song Dynasty, the mist and rain in late spring shrouded the prosperous ancient city, but it concealed unknown secrets of yin and yang. Drug shop apprentice Wu Lei was living an ordinary life, but an ancestral Pisces jade pendant suddenly became hot, breaking his tranquility. This seemingly ordinary jade pendant actually contains the ancient power of connecting yin and yang and suppressing evil spirits. It also reveals the mystery of his life experience as a descendant of a mysterious master.
Qianqian, the young owner of Silk Village in the west of the city, is smart and astute. Her grandfather was a declining mysterious master. She has read ancient books since she was a child and knows the truth about the ancient evil beings suppressed underground in Lin'an City. In an accident, she met Wu Lei, who was dragged into an ancient forest in another world by a jade pendant. The two encountered an ancient alien beast, the Black Armored Beast, and escaped death with the power of the jade pendant.
The hundred-year period is approaching, the ancient evil is about to awaken, strange beasts appear in the world, evil is breeding, and Lin'an City is in danger. Wu Lei, who has the mission of guardianship, and Qian Qian, who is determined to go into danger together, one person masters the mystical art of awakening the Pisces Jade Pendant, and the other quotes scriptures to solve the mystery. They join hands to cross the boundary between Yin and Yang, explore the method of suppression in ancient books, gather the power of comrades, and face the approaching catastrophe. This adventure, which is related to the survival of the ancient city, not only hides the deep secret of the ancient magic weapon, but also interweaves the trust and courage of the two people walking side by side. In the hazy night of the misty Jiangnan, a fantasy legend of the Song Dynasty is written.
