Continuing to work as a nurse even after marriage, Kazue (Yukiko Suo) was bright, kind, and well-liked by everyone around her—until one day, she hears rumors of a pervert lurking in the park she passes through on her commute. Overcome by curiosity, Kazue decides to visit the park herself, only to witness her senior colleague, Naoko (Nao Mizuki), deeply engaged in a sexual encounter with a man. This shocking scene triggers a dramatic transformation in her life.