During the qualifying announcement for the track team member Erika, she was told that she had been selected to participate in a special training camp. Excited about the opportunity, Erika eagerly signed up. However, upon arriving at the training facility, she discovered that there were only two people present - herself and her coach. Taking advantage of their privacy, the coach began teasing Erika's body, touching her inappropriately while they waited for the other team members to arrive. As Erika struggled to resist his advances, the coach decided to escalate things by pressing his erect penis against her opening... Despite her best efforts not to give in, Erika eventually reached her limit and allowed him to slowly insert himself deeper and deeper inside her tight hole.

大会出場の当落線上にいると告げられた陸上部員のえりかは、集中強化合宿への参加を申し込む。しかし合宿地へ赴くと、そこにはえりかとコーチの二人だけしかいなかった。他の部員がいないのをいいことに、コーチは空気椅子をするえりかのカラダをいやらしい手つきでさわってくる。えりかが抵抗できないと見越したコーチは空気椅子を耐えさせるためと称してえりかの膣口に亀頭先を押し当てて…腰を落とすまいと必死にガマンするえりかだったが、やがて体力の限界がおとずれ1センチ2センチと徐々に肉棒を挿入されてしまう。