Description：Hairdresser Ji Akai (Jacky Cheung), fashion designer Da Yanlong (Mo Shaocong) and Feng Shui master Lai Buding (Stephen Chow) are three best friends who jointly opened a trendy hair salon. Unexpectedly, they had a dispute with the owner of the barber shop next door on the opening day. Fortunately, the shop owner's daughter Ya Ying (Sharla Cheung) intervened in time to calm the storm. During the process, the three were attracted by Ya Ying's charm. In order to win her heart, they began to visit her house frequently to show their courtesy. After a dinner party, the three got drunk and slept in the same room with Ya Ying by mistake, causing Ya Ying to become pregnant. In order to live with Ya Ying, the three rushed to take on the role of the prospective father. Because the three had the same blood type, the hospital could not test who was impersonating. Ya Ying's parents decided to first observe the performance of the three. In order to compete for the best son-in-law, the three tried their best to start a fierce competition.