Good friend Zhao Hai borrowed fifty thousand from Sun Cheng and delayed repayment, then at his wedding he complained that Sun Cheng gave a gift money of only two hundred. Sun Cheng took out the IOU publicly to demand the debt, disrupting the banquet, and also exposing the truth that Zhao Hai borrowed money to buy a car and even wanted to misappropriate his fiancée's capital for opening a shop. Zhao Hai edited and distorted a video to smear Sun Cheng, but Sun Cheng produced the complete video and the IOU to prove his innocence. After many twists and turns, Zhao Hai sold his sedan and gold bracelet to pay off all the debts, and the mother and son made a public apology. Sun Cheng let go of past entanglements, kept his promise to his daughter, accompanied her to university registration, and started a new life.