Tooru Kouno has become a campus princess, dressing up as a girl and using his pretty-boy looks to add some color to the dreary world of his all-boys school. He's been given a special mission to put on a concert, but his fellow Princess, Mikoto, is completely tone-deaf. As the Princesses struggle to perfect their act, Tooru has the feeling that they are not alone. Have they attracted the attention of a stalker? Meanwhile, the director of Fujmori Academy steps down, and his son takes over. Shocked at the existence of the Princess System, the new director decides to do everything in his power to destroy it!