As the film club arrives for their planned summer overnight camp on school grounds, Yasuyuki seizes the chance to draw closer to Yuu amid the group's activities. With Shindou Risa overseeing preparations, the students settle in for what promises to be a focused training session. Soon, however, an invisible virus spreads through the building, sparking sudden and powerful urges that cloud everyone's judgment. These unexpected feelings begin to shift the atmosphere, pulling the campers into a web of intensifying attractions.