461个便当

铃木一树（井之原快彦 饰 ) 与妻子离婚后带着儿子虹辉（道枝骏佑饰 ) 一起生活，儿子正处于多愁善感的十五岁，一树感觉很对不起孩子，虹辉高中考试失败，第二年春天才合格，孩子希望中午能吃爸爸亲手做的便当，于是两人有了一个约定，一树三年每天给儿子做便当，儿子三年间风雨无阻去上学，为了心爱的儿子，一树开始了制作便当的历程。Kazuki Suzumoto is divorced and he lives with his 15-year-old son Kouki, who is in a susceptible time. The father feels guilty about his son. Kouki then fails his high school entrance exam. In the spring of the following year, Kouki barely passes his high school entrance exam. Kouki mentions to Kazuki that he likes his father's lunch box. The father and son make a promise to each other. Kazuki promises that he will make a lunch box everyday for Kouki, who promises that he will never skip school.