放課後、学校に残って文化祭の準備。普段とは違う非日常的なこの状況に男子も女子もテンションが上がり、過激な時間停止ごっこ遊びをすることに！これは時間を停止された人はどんなことをされても動いてはいけない。という単純明快なゲーム内容。しかし悪ふざけがエスカレートしてエッチな行為をされたら…。最初は男子がふざけて軽くエッチなことをしたら、今度はお返しとばかりに女子が男子のチ○ポをいじりまくり！ならばと男子も禁断のマ○コへ！やってやられて、やり返して、の繰り返しで事態はどんどん乱交チックな方向に！結果、文化祭の準備なんてそっちのけでみんなで仲良く時間停止セックスにどハマり！

After school, everyone stayed behind to prepare for the school festival. This unusual situation got both boys and girls excited, and they decided to play a wild time-stopping game! The game's premise is simple: anyone whose time is stopped cannot move no matter what is done to them. But what happens when the pranks escalate and sexual acts are performed…? At first, the boys playfully do something sexual, but then the girls retaliate by playing with the boys' penises! So the boys turn to the forbidden vaginas! They give and receive, and the situation escalates into a wild orgy! In the end, everyone forgets about preparing for the school festival and becomes completely engrossed in time-stopping sex!