小学生下田雄一(神木隆之介)的父亲下田牛之助(宇梶剛士)是职业拳击手,但却非常讨厌拳击,因此而感到自卑,不愿意让同学知道父亲的职业。为了获得儿子的信赖,牛之助决定冒险接受一次挑战...... 该片充满了浓厚大阪市井风貌,点滴的父子亲情感人至深。A film gently and humorously depicting the anguish of a wrestling villain being hated by his only child, and how he tries to restore the lost regard from his son.