Programmer Han Yichen downloaded a mysterious APP by accident, and his life path completely changed. He is obviously just an ordinary social worker, but he is always mistaken for being the ace agent of a mysterious organization; he even has to worry about what to eat for dinner for a long time, but he is forced to be involved in all kinds of incredible mysteries. What's even weirder is that every time he solves the puzzle crookedly, he always finds that there is a mysterious system controlling everything behind it. When he thought he had finally found the truth, he discovered that the real mystery had just begun - all seemingly coincidental "identity errors" were the beginning of a huge conspiracy. In this world where everyone is acting, Han Yichen has to bear the identity of others and uncover the truth step by step, and the truth itself may be more terrifying than he imagined.
