Min-guk came to Japan to study Japanese and went to a language school. There, he meets the instructor Mao and falls in love with her … Hyo Beom, who is attending the same lecture, and the head of the language school, who is smirking, are both busy chasing Mao. Min-guk, who truly loves her Mao, doesn’t like the men around Mao, and eventually confesses her sincerity to her Mao. Mao also opens her heart to her Min-guk and the two become close enough to give her private tutoring… Her director offers Mao her vice-president position and covets her… Can Mao and her love bear fruit?