Based on real events, from the life of Andrea Casamento. Andrea's life, a middle-class woman, changes drastically when her 18 year-old son ends up in jail falsely accused for a misdemeanor he did not commit. Now she must dedicate his days to freeing him from jail. To release him, she has to face the bureaucracy of the judicial system, prisoner abuse, but above all her own prejudices, values and beliefs. She will realize of this powerful change when she can't help falling in love with a convict.

　　本片的主人公是上田唯士（岛田铁太 饰），10岁，小学四年级。他是个普通的男孩，喜欢小动物。然而，这个“普通的男孩”恋爱了！他的心动对象是三宅心爱（瑠璃 饰）——一位热衷环保的“环保少女”。为了接近心爱，唯士决定加入她热衷的环保活动。与此同时，班上的小小问题儿童桥本阳斗（味元耀大 饰）也意外加入。就这样，三人开启了一场环保行动，然而事情的发展却远远超出了他们的想象…

　　Based on real events, from the life of Andrea Casamento. Andrea's life, a middle-class woman, changes drastically when her 18 year-old son ends up in jail falsely accused for a misdemeanor he did not commit. Now she must dedicate his days to freeing him from jail. To release him, she has to face the bureaucracy of the judicial system, prisoner abuse, but above all her own prejudices, values and beliefs. She will realize of this powerful change when she can't help falling in love with a convict.