Xia Wanxing, a has-been child star, and Lin Jianshen, a popular top star, exchanged souls due to an accident. Xia Wanxing had to bear the skin of Lin Jianshen's "stunning beauty in the world" and use his salty fish philosophy of "lying down and never standing" to cope with high-intensity work. His sense of authenticity and relaxation in not following routines made "Lin Jianshen" who is deeply entrenched in the perfect persona soar in popularity and unlocked new heights in his career. Lin Jianshen, on the other hand, fell into the peaceful (actually ruined) life of Xia Wanxing after he passed away. From being in the spotlight to being ignored, he was forced to deal with the various "mess" left by Xia Wanxing (arrears of rent, perfunctory crew contracts), and in the bottom life, he re-experienced the pure joy of performance and the warmth of human fireworks. In the process of being forced to play each other, the two went from initial confusion and confrontation to gradually understanding each other's past and pain (Xia Wanxing chose to escape due to the darkness of his native family and the entertainment industry, while Lin Jianshen was sensitive and internally consumed due to perfectionism and external pressure). Finally, they worked together to find a way to change their bodies, and in the process healed each other's psychological problems, achieving a double counterattack and growth in career and soul.