The story is a bout the summer camp that takes place in nature, where participants work together to prepare meals and participate in events to promote cooperation and education. The protagonist named Yoshiki is introverted and unsure about attending the camp. While on a hiking trip with campmates, the group is told by the camp leader that they must pair up and engage in consensual sex with each other as a part of the camp tradition. Yoshiki is shocked but eventually has his first sexual experience with a popular girl who had previously spoken kindly to him during the hike.