The kind and simple Hua Lai Chu (Charmaine Sheh) has the IQ of a ten-year-old child. Since her parents passed away, she has shouldered the responsibility of taking care of her younger siblings. In addition to making money, she does everything herself, and protecting her younger siblings is even more urgent, which often causes a lot of funny things. The second sister Hua Lai Ping (Leung Ching Kei), the real boss of the Hua family, is often unscrupulous at work in order to get rid of the family burden as soon as possible because Lai Chu is mentally retarded and her younger brother Hua Weicong (Lam Chi Sun) is not doing his job properly. He even helps his old love boss Luk Ho Cheong (Ao Jianian) to sell out the interests of the company. One day, the chairman of the company group Jiang Sen (Wu Feng) suddenly suffered a stroke and fell into a coma. The always cynical grandson Jiang Yi (Raymond Lam) was dismissed from all his positions and finally fell into the streets. Fortunately, with the care of Lai Chu, the two of them developed a subtle relationship day and night. But when the grandfather woke up, he firmly opposed their unusual relationship and forced Jiang Yi to give up the Hua sister and return to the real world to accept what ordinary people call a normal life and normal relationships...