千堂真澄（松重丰 饰）是在高中里执教的老师，个性古板严肃的他和儿子胜喜（井之胁海饰）之间的关系非常的疏远，他甚至完全不知道胜喜整天都在忙些什么。一天，千堂意外的收到了胜喜出意外的消息，当他赶到医院时，等待着他的，是完全失去了意识，陷入了昏迷之中的儿子。

　　在这个节骨眼上，3个身穿偶像服装的可爱女孩忽然出现在千堂的面前，她们是还未出道的地下偶像组合，而她们的经纪人不是别人，正是胜喜。失去了胜喜，偶像团体面临着解散的危机，此时，被三位少女的活力所打动的千堂，决定接替儿子的工作，成为她们的制作人。

A high school teacher, struggling to keep up with today's youth and estranged from his only son, receives the news about a terrible accident that left his son in a coma. Wanting to know more about his son's life, he finds out that he's been working as a producer for a new underground idol group who are now left without a guiding hand.