Thirty-five year old Isamu Umezawa (Tatsuya Yamaguchi) works for a major trading firm and is a single dad to his only son, Hiroshi (Hironobu Nagashima), a sixth-grader who hates to study but loves to play baseball. Ever since his wife divorced him on a whim five years ago, his days have been a constant struggle to keep up with work and household chores. One day, Isamu sets out on the task of finding his son a prep school for junior high entrance exams, but he becomes desperate when finding that most schools have already closed off applications. It is at such a time that Isamu hears about the Goddess of Exams. Rumor has it that she was accepted at all of the 17 topnotch junior high schools with top scores 2 years ago and that whoever she tutors makes it into the school of their wish, one hundred percent. Isamu finds out that the girl's name is Michiko Sugawara (Riko Narumi) and begins a frantic search for her. When Isamu finally finds Michiko and pleads her to tutor Hiroshi, she demands, "If you want me to tutor your son, kneel down at my feet and beg."

在一流商社上班的３５岁的梅泽勇(山口达也 饰)和虽然学习不好但酷爱棒球的小学六年级的儿子广（长岛弘宜 饰）一起生活。梅泽勇一直爱着独生子和妻子，但是自从５年前妻子突然提出离婚以来，奔波于与儿子的两人生活、工作以及家务。勇为了广的中学入学考试开始寻找私塾。可是４月份各个私塾以及个人指导班都已满员。一筹莫展的勇听闻一位家庭教师的传说。那个人物被称作「考试之神」，２年前以最高分连续突破１７所中学的天才中学生。只要她指导，不管什么样的学生百分百能考入理想的中学。勇查探出那个中学生的名字叫管原道子（成海璃子饰）后拼命寻找。于是终于找到管原道子的勇恳求做广的家庭教师，可没想到道子竟然说：“想邀请我做家庭教师，就跪在此地！”