Introduction to the film:

Diana (Zheng Yuling) is a typical urban woman. She hopes to have a career that she is proud of, and always yearns for a good man who loves herself and has money. Unfortunately, since the financial turmoil, Hong Kong's economy has been in a downturn, and large and small companies have laid off employees and "slimmed down". Diana was caught off guard and unfortunately became a member of the unemployed army.

Wei (Ceng Zhiwei) is a hotel manager. After his wife died, he lived alone with a son and a daughter. Daughter Qian Shu (Miriam Yeung) graduated from college for two years and is looking for a job; My son Wan Hua is a student of an international school. On the surface, this is a wealthy single-parent family, but in fact, Wei has been unemployed for a long time and has become a negative-equity owner. Wei only relies on his remaining savings to pay for the house and living expenses. However, for the sake of his father's dignity, Wei pretends to go to work on time every day and hides the truth about unemployment.

Xu Shaoxia (Eason Chan), the director of the TV station, dreamed of directing martial arts films, but was assigned to the comprehensive program group to take charge of the new game show "Money Family". The program "Save Money Families" gives the participating families a living allowance of 100 yuan per week, and the family with the lowest total consumption is the winner. The first prize is "the TV station repurchases the negative-equity property of the winner at the original price". Diana and Wei, two unemployed people, decided to pretend to be husband and wife in order to get out of trouble. The "fake family" and four people arrived at the TV station, and the life of saving money began.

The participating families lived in a "money-saving house" specially designed by the TV station. The house is fully equipped, but there are traps everywhere. Because everything at home is charged, which is basically like drinking a glass of water. During the seven-day time limit, everyone tried their best to save money: trying to eat a stomach everywhere, putting on makeup at the cosmetics counter and taking a bath in the public bathroom. Under hardships, some people secretly spend money, some people love children and are willing to sacrifice, some people are young and ignorant, and some people stick to the rules of the game ... Human nature is fully demonstrated. Through the game, Diana knew the other side of Wei; Xu Shaoxia and Qian Wan knew heroes and attached importance to their further development, but things were used by program producers ... Finally, Wei Jia overcame all difficulties and became the winning family of the "money saver" game, but the host announced that they would be shamefully deprived of their qualifications. ...