Sulli is an inner feeling girl, she talks very little, and  afraid of men. When moving to a new school, she is always teased by her unkempt hair, rustic glasses, over knee length skirt. Then she secretly likes a boy, but her fear is always clinging to her. How will she overcome that, and say "I love you" to him?

Taemin is a lady-killer, he has a lot of girlfriend, but he never plan to fall in love with any girl. The one who never refuse having with any girl who likes him

Minho is a completely opposite to Taemin, but they are best friends. He likes helping people.

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and other characters will appear later