Underworld godfather Kim, nicknamed Egg Tart, is friendly and sociable. He likes singing more than being the leader of triads. With his principle of peace, harmony and stability, he has won the support of the gang elders. Meanwhile, the cool and handsome Lung becomes a gangster because he is attracted to the cool image of gangsters portrayed in the "Young and Dangerous" movies, and he believes that he has what it takes to be the big boss. To support Lung, his wife sets a trap by trying to seduce Kim in order to obtain the secret of becoming the godfather.

Chan Shi Kyun (cast by Richie Jen) and Yu Chi Lun (cast by Ekin Cheng) have been long time good friends. They recklessly bought a dishwashing factory on the cheap but discover that the business is in a financial ruin and has no employees while existing contracts must be honored at the risk of financial penalty. To solve their problem, they decided to hire through a social worker so they will be eligible "special social enterprise" government subsidy in this crowd-pleasing comedy.

The film tells stories about four families with different races. By participating in an inter-school competition, reflecting a group of students in 6E class, from encountering different racial conflicts and issues, to putting all the differences by and work together for a common goal.