Former criminal policeman Lin Xiangbei resigned to deliver food because of a mistake in hostage negotiations three years ago that led to the sacrifice of his colleagues. Relying on his professional instinct, he caught anomalies in food delivery notes and secretly helped others. He grew from a "waste" escaping the past to a "note interpreter" in a city. He teamed up with a group of riders to overturn a black industry chain that used algorithms to harvest riders, and finally completed his own redemption.
