At the Four Seasons Ice Shop in Sham Shui Po, the boss, Ji Mo, is as gentle as jade. Neighbors praise him as a rare good young man. He silently likes the policewoman Lin Siyao who often comes to drink frozen milk tea, but he can only watch her holding the arm of the upstart "Brother Long" Chen Yonglong. Brother Long is the domineering underworld leader in Yau Jian Wang, who comes and goes at the drop of a hat to Lin Siyao, while Ji Mo is always her backup tire who is always there for her - repairing water pipes, delivering late night snacks, picking up people on rainy days, and always gets the words "Ji Mo, you are such a good person". One day, Ji Mo accidentally awakened the "emotional resonance system", which allowed him to sense and collect other people's true feelings for him and exchange them for various abilities. He originally thought it was good luck coming from heaven, but he gradually discovered that in this Hong Kong island where the jungle is strong and the strong prey on the weak, being as gentle as jade cannot buy respect. He began to use the system to gain insight into people's hearts, step by step from being the boss of Himuro to intervening in underworld disputes, using the gentlest means to do the most ruthless things. When Brother Long finally realized that this humble ice room owner was his biggest enemy, Ji Mo had already put on gold-rimmed glasses and had a warm smile, but the whole Hong Kong community was frightened. The moment the spare tire turned into a regular one, Lin Siyao looked at the familiar yet unfamiliar man in front of her and finally understood that he was no longer the foolish and giving Ji Mo.
