During the special period of summer vacation, three hidden stories unfold in an omnibus format between teachers and students. Yuna returns to her hometown and reunites with Minami, a former student, finding her emotions stirred by someone she never noticed before at school. Meanwhile, Kaoru, a G-cup teacher in charge of remedial classes, scolds the irresponsible student Mori for his laziness, but he becomes enraged and invades her bedroom. Additionally, Tomoka, who is poor at sports, decides to take tennis lessons during the break after being encouraged by a student. As summer vacation comes to an end, they share joyful memories while new feelings begin to emerge.