Mai, Rin and Sayuri were changed to Horikoshi gakuen as they passed the audition to be the first girl group in J.J express.  Soon, they arrived at 3AAA (the class), the most unexpected things was known. The Hey!Say!JUMP members were actually yankees! The HSJ joins J.J just for money and other reasons that should not  be known by us, their fans. The girls feelings for them started to change at the same time, both good and bad while trying to hide their big secret.