Makino Tsukushi, a girl from a modest background, hopes to quietly finish her final two years at Eitoku Gakuen. When she stands up for a friend against the school’s most powerful and affluent group, the F4, she draws their attention and receives the F4’s “red card,” a declaration of war. Rather than submit, she resists and, as she develops feelings for one of the F4 members, Hanazawa Rui, she discovers that the elite boys are not what they first appear to be.