Makino Tsukushi is the only poor student at Eitoku Gakuen, the school of the ridiculously rich and privileged that is ruled by Flower 4 or F4, a group of four boys who come from extremely powerful families: Domyoji Tsukasa, the leader and heir of the Domyoji World Finance Group; Hanazawa Rui, the introverted son of a large company; Nishikado Sojiro, a player who is the heir of a tea ceremony school; and Mimasaka Akira, a madam killer with ties to the underground. If a student gets on the F4's bad side, he/she gets a red notice and is bullied and driven out of school.