Wu Mian is an ordinary dessert shop owner. His greatest pleasure every day is to research new cake flavors and send some warmth to his neighbors. Until that day, he discovered that there was a mysterious USB flash drive hidden in the second-hand refrigerator he bought, which contained criminal evidence and transaction records of all the big guys in the underground world of Hong Kong City.
What's even more outrageous is that this USB flash drive was secretly stuffed into the refrigerator by an "undercover" who was on the run before he died - and that undercover looked very similar to Wu Mian. Overnight, he became a "key figure" in the eyes of all forces in Hong Kong. Gangsters, police, business giants, and international killers all focused on this sunny boy who only knew how to make cakes.
Wu Mian just wants to live quietly, but trouble always comes. Relying on his super powers of observation and logical reasoning, he found a way out of desperate situations again and again. What's even more amazing is that he found that he seemed to be able to "see through" everyone's causal chain - as long as he knew a person's past, he could predict his future behavior pattern. This ability allows him to piece together the truth from the tiniest clues.
When the most powerful "four major families" in Hong Kong City begin to make plans, a storm sweeping the entire underground world is about to come. Wu Mian, an ordinary person who "accidentally" broke into the center of the whirlpool, became the key piece that moved the entire chess game.
