Thirty-five year old Umezawa Isamu works for a major trading firm and is a single dad to his only son, Hiroshi, 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 Sugawara Michiko 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."
主人公の梅沢勇は5年前に妻と離婚し、子供の広と2人で暮らしている商社マン。 勇は体育会系で進学も受験もラグビー推薦だったため、受験とは縁がなかった。 そんな勇は、小学6年生になった広から「中学受験したい」と告げられ、『受験の神様』と言われる中学3年生の天才家庭教師「菅原道子」に家庭教師を依頼する。
與妻子離婚的一個工作狂梅澤勇為了兒子梅澤廣的中學入學考試而煩惱不已。為了讓兒子考上自己心儀的學校，他找到了號稱「考試之神」的初中生菅原道子，請她做兒子的家庭教師，在眾家長、學生間流傳著，只要有「考試之神」擔任家庭教師，就一定可以考上理想的學校。在補習的過程中，考試之神還挑選了西園寺義嗣、手塚惠美，一同與梅澤廣進行培訓。
