"I have a girlfriend..." Shin Aera is seventeen years old.  Her family is a mess.  She's just moved to a new school.  She has a crush on Na Jaemin. He's the hottest boy in school.  She should stop dreaming and fantasizing about him.  Because, even if he likes her back --- which he doesn't --- he's not hers to love.  He has a girlfriend.

Sixteen-year-old Mina has been in love with eighteen-year-old Na Jaemin, the boy next door, since forever. He is the most popular boy in school, despite his cold and aloof personality, earning him the nickname "Icy Prince". She enters into a fake relationship with him, against her better judgement, hoping that he'll fall for her somehow. Will he fall for her, or is she dreaming the impossible?