She is Mo Yuyin (Yin'er), the "ghost beauty" who is said to be able to approach the target silently in Counter-Liquid Sand; she is Shuo Ling, the youngest and most powerful leader of the Mo family; she is one of the three commanders of the Yin Yang family, her strength is below that of the big commander and above the young commander, she is Qingsi Ming Ming Ge. The three seemingly unrelated people are pulled closer by the red thread of fate step by step. Where should they go when they are supposed to be hostile?