Twenty-two-year-old Wang Junjie shouts about being "independent" with his mouth, but actually still treats his mother Chen Qian as an ATM. Chen Qian decisively cancels daifu, and returns the 14 hundred thousand bills. Wang Junjie suffers setbacks renting a room, and gets rejected borrowing money, having no choice but to go to a restaurant to work part-time, experiencing old friends' mockery, customers' harassment, and collapsing from exhaustion. Chen Qian withstands pressure from her ex-husband and relatives, insists on not providing a safety net, and also begins spending money on herself. Wang Junjie gradually learns to keep accounts, cook, and pay board money, refuses his father stuffing money and old friends' provocation, actively works overtime to save money to buy a physical examination package for his mother, and apologizes and admits his mistake. In the end, he grows from a wasteful and dependent "giant baby" into an adult capable of shouldering responsibility.