To unite the class and make the school festival a success... The new teacher, Hibiki Natsume, finds herself succumbing to the bodies of the male students. The class is lacking motivation in the lead-up to the festival. Ms. Natsume is taken advantage of by one male student, using the festival as an excuse. Determined to bring the class together for the festival, she convinces herself that there's no other way and gradually falls into pleasure as more and more student dicks appear before her.