Monk Tang has been studying scriptures for a hundred years, the incense in Lingshan is flourishing, and the three realms are peaceful. But a strange case in a secret room suddenly broke the peace. The golden body of the Pure Wisdom Arhat under Samantabhadra was inexplicably shattered, and all his merits were gone. Only a six-word prophecy was left on the scene: Those with full merits will die. The West insists that the Heavenly Court is secretly committing the murder, and the Heavenly Court denounces Buddhism for directing and acting on its own. Immortals and Buddhas are gathering in the sea, and the war will soon sweep through the three realms. In order to resolve the catastrophe, Sun Wukong, the victorious Buddha, and Yang Jian, the disobedient Erlang, were ordered to form a cross-border detective partner between Buddhism and Taoism. One has the shackles of righteousness and his golden body has hidden cracks, while the other has a holy body that is not bound by merit. The two traveled through Lingshan, Jiutian Galaxy, and Jiuyou Underworld, and encountered the tragic deaths of high-level immortals and Buddhas one after another. After layers of investigation, a shocking secret emerged: the so-called positive fruit is never a gift from heaven, but a parasitic shackles refined from the origin of heaven. Heaven controls all living beings through merit, secretly harvests the strong, and instigates internal strife in all directions. Wukong and Yang Jian abandoned their factional barriers and joined hands to tear apart the layout of heaven, break the solid rules, and reshape the peace of the three realms.