Hiiragi Shuuji, ein Beamter des Amtes für Gesundheit, Arbeit und Sozialhilfe, bittet die Hamatora, einen Mann aus Okinawa zu finden. Nice und Murasaki gehen undercover zurück in die Yokohamabane High School und sodann nach Okinawa, wo sie mitten in den Streit zwischen der Schule und der örtlichen High School geraten ...
Moral takes the form of late Art to answer Nice's phone call and starts acting like him. Later, Nice and Murasaki receive a job where they have to find the manufacturer of a drug that sends people into eternal sleep. Nice and Murasaki go to the area with Theo and Rei who visit the beach. There, Theo has an argument with a gang and decides to settle by competing in a triathlon. Shortly afterwards, Nice takes advantage of Theo's appearance to attract a drugdealer who would take him to the drug's manufacturer. Nice and Murasaki learn the manufacturer has taken his own drugs and is their client's brother. In compensation for being used, Theo requests Nice to participate in the triathlon with him. Before the competition, Murasaki talks with the unconscious drugdealer, feeling related as both as constantly overshadowed by others. In the triathlon, the rival gang has hired Honey, Three, Birthday and Ratio but they are disqualified shortly after the beginning. In the final act, Murasaki joins the rival gang to challenge Nice on a one-on-one while bringing the comatose man to see him fight. Although Nice wins, the drugdealer awakes and starts arguing with his brother. Meanwhile, Moral and his assistant Momoka commence a surgery.
Okinawa, un bel endroit pour aller y faire un petit séjour. Justement, c'est là que nos détectives se rendent ! Entre Idéal, une boisson qui fait tomber les gens dans un sommeil profond, et les concombres amers, comment résister ? C'est ainsi que vous verrez également participer nos héros dans un triathlon ! Que de compétition !
Hiragi Shuuji, ministro della salute, del lavoro e del welfare, chiede ad Hamatora di catturare l'uomo che produce l'Ideal a Okinawa. Nice e Murasaki riprendono le loro identità in incognito alla Scuola Superiore Yokohamabane e vanno a Okinawa, dove finiscono in mezzo alla rivalità tra la Yokohamabane e una scuola superiore del posto...
