新搬来的公寓这家人是母亲带着四个孩子：明（柳乐优弥 饰）、京子、茂、雪。但母亲却得对周围的人们撒谎说丈夫去海外任务，自己与长子两团体在一同生活。理想是其它三名弟妹是“黑孩子”，由于四个孩子有着各自不同的父亲。他们不时呆在家中，没有去学校上学。 　　在母亲去百货商店任务时，年岁尚小的明就在家中替代母亲行使家长的职责。突然有一天母亲不见了，她把手中仅有的20万日元现金和一张短短的便条... The family moved to the new apartment is the mother with four children: Ming (LiuLe optimal "), Beijing, alum, snow. But mother have to lie to the people around said the husband to work abroad, with their eldest son two people live together. The fact is that the other three younger brothers is a "black children", because the four children have their own different father. They stayed in the home, did not go to school. In the mother to work in department stores, is still so young Ming will perform the duties of the parents at home instead of mother. One day the mother suddenly disappeared, she put her hands only 200000 yen in cash and a short note...