An elderly couple goes to a bank on a stormy day to take shelter from the rain, only to be publicly driven out and humiliated by the lobby manager. A security guard speaks up righteously and suffers severe retaliation. With a single phone call, the identity of a billion-dollar client shocks everyone. Layer upon layer of regulatory black secrets are uncovered, and everyone expects a crazy revenge. Yet he chooses to believe in the system, refuses to use his wealth to bully others, and pushes for a thorough investigation of all old cases, reshaping the service original intention of treating everyone equally. Wealth does not equal privilege, and every ordinary person deserves to be treated kindly.