Tang Qing, a killer from the Tang Sect who had a grudge against the Ming Cult, accepted the task of assassinating Lu Ziming, the master of Linfeng Castle in the Valley of the Wicked. After losing to the enemy, he had no choice but to join the Valley of the Wicked and follow Lu Ziming. Lu Ziming was passionately devoted to him and pursued him in every possible way. As time went by, he began to fall in love with Lu Ziming, and he could only struggle between his own feelings and hatred.
Tang Qing's junior sister Wen Yin lost Tang Qing's whereabouts and had to follow her master to the Haoqi League. She accidentally met Yan Shaoyun who was stationed in Zhuluping. Several encounters made her interested in this person. However, Yan Shaoyun mistakenly thought that Wen Yin was a spy from the Valley of the Wicked. Wen Yin misunderstood that Yan Shaoyun was in love with the girl Qixiu next to him. The two misunderstood from shallow to deep, and then they resolved and retired to the countryside together.