Retired security guard Zhang Facai was defrauded out of his entire family fortune by his adopted daughter. He accidentally activated the consumer cashback system, allowing good-looking members of the opposite sex to receive multiple cashbacks on purchases made by him. He quickly accumulated wealth through the system and counterattacked to become a shareholder of many companies. He not only punished his ungrateful adopted daughter and her accomplices, but also gained Qin Wanyue's sincere affection. At the same time, he helped relatives and friends and faced rough situations, and finally achieved financial freedom and a happy life.