At the end of the Yuan Dynasty, warlords rose up and the martial arts world became turbulent. There are rumors in the martial arts world that those who obtain the Dragon Slaying Sword and Heaven Reliant Sword can become the supreme martial arts master, commanding the world. No one dares to disobey. For a moment, the turmoil arose, triggering a competition in the martial arts world for the Dragon Slaying Sword and Heavenly Sword, leading to several marriages and malevolent relationships. Zhang Cuishan from Wudang Sect and Yin Susu from Tianying Sect fell in love due to their encounter with the Dragon Slaying Sword. In the end, they were both forced by righteous individuals to commit suicide due to the Dragon Slaying Sword. When Zhang Wuji, their son, grew up, he became the leader of the Mingjiao Cult by chance and became the peerless martial arts"the Nine Yang Manual" and"The Great Shift of Heaven and Earth". Zhang Wuji had intricate love ties with the Yuan Dynasty princess Zhao Min, the Emei faction Zhou Zhiruo, his cousin Yin Li, and his maid Xiao Zhao. However, Zhou Zhiruo, who appeared to be weak, was a full belly black woman. In order to obtain the secret of the Heaven Sword and Dragon Slaying Saber, she spared no effort in killing Yin Li and framing Zhao Min. Although Zhang Wuji saw Zhou Zhiruo's true face clearly, he still couldn't let go of her. Afterwards, Zhang Wuji resolved various grievances in the martial arts world, resigned from the position of sect leader, and traveled to Mongolia with Zhao Min.