Yoona's got all of the problems of an almost seventeen year old girl. She's trying to get her driver's license, her mom and dad are pressuring her about going to prom, and she never can seem to make it to the bus on time. Even worse, Yoona likes girls, not boys, and all of the girls in her hometown are pretty darned straight.

Her best friend, Donghae, can attest to that, considering that he never has trouble getting a girl, even if he's not interested in the freshmen who swarm around him. When new girl Jessica shows up, needing tutoring in math and chemistry, Yoona figures Donghae will get the date, like he always does, and that makes life even more difficult. Yoona's in for a surprise, though, because Jessica doesn't fall for her good looking best friend. In fact, Jessica seems to like girls, too, and things get a little scary when Jessica asks Yoona out on a date. Somehow Yoona knows if she says yes to Jessica, things will change forever. 

Can she manage to pass her driving test, get to prom, and come out to her parents the way Jessica wants her to? Or will Yoona's seventeenth birthday be the worst day in history?