主角阿努是個20歲的大學生，到了這個年紀還會夢遺，所以遭到同社團的深見澤學長拼命嘲笑，這天他們在校園裡招收新成員，突然間來了一個女孩小山內揚羽打算加入他們的兒童文學同好會。只是令阿努驚訝的是小山內竟然跟他夢裡出現的少女長的一模一樣，而且讓大家吃驚的是小山內竟然已經25歲了，外表卻只像個國中生。 純情的大學生搭配上一個有著不為人知過去的女人，加上這女人跟他夢中的女孩又是那麼相像，雙方會擦出什麼火花呢。

Rascal. Joker. Dreamer. Genius... You've never met a college student quite like "Rancho." From the moment he arrives at India's most prestigious university, Rancho's outlandish schemes turn the campus upside down—along with the lives of his two newfound best friends. Together, they make life miserable for "Virus," the school’s uptight and heartless dean. But when Rancho catches the eye of the dean's daughter, Virus sets his sights on flunking out the "3 idiots" once and for all.