The story takes place in an area of Huanghe Cave in Qingxi River, Seoul, which is about to be demolished. With the advance of municipal renovation projects, modern buildings have sprung up one after another, but in a certain corner, there are still slums that are incompatible with the beauty of the city. The huge contrast between modern and backward makes it look very different, which is a "place that will not be surprised no matter what happens". In a dilapidated apartment in this neighborhood, there lives a family of four whose members are all men. His father, Zhang Shoulu, is famous. He is a wizard. Many women who want to have sons are here to get their wishes. His three sons are all from the same father and different mother. The eldest son code 963, is an honest courier, the second small dog nose, does not pay attention to his father, but is the most filial of the three brothers, the third is a genuine riffraff. One day, a woman appeared in such a family. The woman, named Xiaochun, originally made a living by selling rice cakes. The second dog brought it back from the road to relieve his father's boredom. Xiaochun has an ordinary appearance but a lovely personality, and all men who have seen her will be attracted to her. She always gives out cheerful and exaggerated laughter, which fascinates the men of a family of four.