In an accidental mission, Yan Shangqing and Jiang Chuxiao discovered the secret unknown to the world about the "Qiyun Sect" that had been wiped out decades ago. But just at the "Qingyun Meeting" held every five years, the "evil energy" hidden in Jiang Chuxiao's body surged and took over his mind, killing his fellow seniors. Where will the fate of the two of them go...