Tsukushi Makino is a student at the super-prestigious Eitoku Academy, a seat of learning for some of the children of Japan’s wealthiest individuals. Somewhat intimidated by the school and its rich-kid students, she wants nothing except to stay below the radar and unnoticed during her time at the school. She has one girlfriend at the school, but does not speak to anyone else. All that changes on the day her friend spills juice all over the pristine white shirt of Tsukasa Dōmyōji, the most aggressive and spoilt member of the so-called "Flower Four" or "F4".

It's been a year since Tsukasa Dōmyōji left for New York, but Tsukushi Makino refuses to accept his reasons for going alone. Following him to New York, Makino is convinced she'll be able to find Dōmyōji and make him explain himself, but her adventures in New York turn out to be much different than those she had planned.