Chang-soon, the eldest brother, a self-proclaimed miser who runs a dumpling business. Chang-gyu, the middle brother, the top fighter in Yeosu. And Chang-eun, the youngest, born into a family with only sons, who received so much rough affection from his brothers that he was often hurt and beaten. Chang-eun, the youngest in a perfectly ordinary family, has become a human punching bag, whether due to his immaturity or bad luck. Chang-eun, a typical Korean who can't show his anger or hardships, suffers from a 'nice guy' complex. This is a heartwarming story about Chang-eun, which only he didn't know.