Cheng Yang, Cheng Jen, and their brother Chung Yin-Chiu desperately sought to master the powerful "Yin Yang Separate Body Style," a unique Taoist martial art practiced by Yin Yang Tang. One day, student Ko Sheng secretly attempted the style but, due to insufficient foundational training, his soul separated from his body. Yin-Chiu saved him at the last moment. Meanwhile, Master Fu Luen, leader of Tien Wu Men, aimed to dominate the community through force, relentlessly practicing the "Tzu Yin Wicked Style." He manipulated Kuan Shih-Chung with poison, ordering him to obtain the placentas of children and women for his dark practice.