A hundred years ago, Yang Wuji, a sunny young man who gained immortality due to an unexpected encounter in an ancient temple, returned to the city as a "twenty-year-old" to hide his secrets. While repaying his favor to the granddaughter of his savior, Li Qingmei, a top female researcher, he was involved in the business conspiracy of a hypocritical rich man and the academic suppression of a jealous rival. He slapped the face gracefully with the calm wisdom accumulated over the years, and while pretending to be a pig and eating a tiger, he revealed the truth about the family's extermination, and finally completed his revenge as an immortal, and joined hands with the heroine to protect the ordinary warmth.
