Three years ago, Zeng Yi was kicked out by his ex-wife Su Wan on the grounds that he was "not worthy of her ambition." Three years later, he returned with a nine-tailed fox that could spy on people's hearts, only to find that Su Wanqing had become the president of a group that controlled experiments on human nature, specializing in using mental manipulation techniques to play with people's hearts. What Su Wanqing didn't know was that Zeng Yi's nine-tailed fox was the mythical beast she wanted most in her experiment - one that could see through all disguises. When Su Wanqing tried to use psychological suggestion to control a business tycoon, Zeng Yi showed up at the negotiation scene with the nine-tailed fox. He smiled and said to Su Wanqing: "Aren't you the best at experiments? From today on, you are my experimental subject." Su Wanqing didn't know that every word and every movement she made was invisible to the nine-tailed fox. What's even more frightening is that Zeng Yi discovered that behind Su Wanqing's experiment, there was a secret that could destroy everyone's emotions.
