Valentine is a secondary-school student like many others. Her daily life is filled with all the upheavals and self-questioning of adolescence. Self-conscious, she tries to assert herself within a group in which she is "the shy one". She spends most of her time with her girlfriends, at school or at parties on the weekend. She also tries desperately to get the attention of Felix, the boy she's in love with – and who has no idea she exists. To make things worse, he's in the "rival" class to her own... Little by little, this young woman learns to express herself and find her place in the cruel and treacherous world of adolescence, from MP3 players and Japanese mangas, to her first parties and her first whiskey and Coke.

Going into their last year of middle school, Valentine and her friends are at that defining time of their lives when new experiences are coming thick and fast. They've got their finals just around the corner, but that doesn't stop them from bunking classes and flirting with guys (even if, in Valentine's case, they're not the guys she actually wants to flirt with... the gorgeous Felix is as aloof as ever). Valentine struggles to find her feet in this emotional whirlwind.