A group of close friends who attend a private school all have a debilitating crush on the sunny star pupil, Sun-ah. The only member of the group who claims not to is Jin-woo, but he ends up loving her as well.

Özel bir okula devam eden bir grup yakın arkadaşın hepsi, güneşli yıldız öğrenci Sun-ah'ya karşı zayıflatıcı bir aşk beslemektedir. Grubun aşık olmadığını iddia eden tek üyesi Jin-woo'dur, ancak o da sonunda Sun-ah'a aşık olur.

不懂事的振宇（振永 飾）在向善雅（多賢 飾）告白前，共度的許多時光的18歲初戀故事。

Jin-woo y sus amigos atraviesan los altibajos de la adolescencia. Sin embargo, todos comparten una fascinación por Seon-ah, la elegante y hermosa estudiante modelo que parece un sueño inalcanzable, a pesar de estar en la misma clase.

A trama, uma refilmagem homônima de um filme taiwanês lançado em 2011, acompanha um grupo de amigos que frequentam uma escola particular e são apaixonados pela mesma garota, Sun-ah (Dahyun). Jin Young interpreta o único do grupo que afirma não ter sentimentos pela aluna popular.

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