To protect his fortune from financial crisis, billionaire Zhixiong Lin stored his overseas bank account numbers and passwords in a USB drive that looks like a crystal necklace. He entrusted the necklace to his daughter Lindan. Driven by greed, people wanting a piece of the mass fortune manufactured a car crash to kill Lindan and get the USB drive. When the police and other interested parties were trying to solve the murder and locate the USB drive, they encounter a woman who looks identical to Lindan , making the situation more complicated.