Su Huiyin, an ordinary customer service officer, accidentally got involved in the "pretend investigation" of Pei Mingchen, the heir to the Pei Group, because he took over for a colleague. She was originally a Cinderella who depended on others, but in one "coincidence" she resolved the crisis with her sobriety and perseverance, which made Pei Mingchen interested in this girl who "didn't follow the script". After realizing his twisted possessiveness towards Su Huiyin, his childhood sweetheart, the psychiatrist Gu Shenzhi, began to press him step by step with the gentle trap of "for your own good". The three of them started an emotional game of "who is pretending to be a pig and who is a tiger" under the neon lights of the city. In the end, Su Huiyin used the most authentic attitude to make Pei Mingchen put aside his calculations and let Gu Shenzhi face his inner paranoia and complete their respective redemptions.