Late at night in the foggy city, everyone is placing bets and everyone is pretending to be blind. Tang Haoran was involved in a deadly situation where warlords, chambers of commerce and hidden lines were intertwined by a secret letter, while Zhu Shiqing was like a knife with an invisible edge, approaching the truth step by step; when every step may be out of control, they can only gamble on the hottest way out in the coldest situation.