Five years ago, Shen Wanwan had an overnight encounter with Lu Jingchen, the business emperor of Shanghai, and she left home with her secret. Five years later, she returned to China with her five-year-old son Lu Xiaonian, who looked exactly like Lu Jingchen, and accidentally collided with Lu Jingchen at the airport. Lu Jingchen recognized the miniature version of himself at a glance, and a step-by-step journey of "chasing his wife and recognizing his son" began.