民国年间，大元银行遭受盗贼袭击，一众银行老板下令掘地三尺也要追回失落的钱财。在街头 sells artsy goods brother, and a mysterious detective Eleanor met the dying bank thieves, Iron Tiger. The iron tiger said that he was betrayed by his own people, and before he died, he asked his brothers to make sure no one else knows about his betrayal. This sets off a chain reaction of events as the siblings begin their investigation into the death of the Iron Tiger and his claims of betrayal. They are joined by detective Eleanor who also wants to find out what happened to Iron Tiger and uncover any evidence that may be left behind. The three of them team up and use their skills to piece together the past and figure out who betrayed Iron Tiger. Along the way, they encounter a variety of dangerous individuals who are determined to keep the truth from coming out.