Karen-sensei's ordinary life collapses in an instant when she can no longer hold it and ends up urinating outdoors, marking the beginning of it all. Discovered by her students, she is forced to repeatedly urinate in front of them, thrusting her hips forward and spreading her legs. Cornered and helpless, she is pushed to the extreme, forced to empty her bladder in every possible situation. The beautiful, elegant teacher exposes herself completely during these humiliating lessons. Her plight unfolds as if approaching the final chapter of a tragic story.