Aiko is a kindergarten teacher who leads a peaceful daily life, but has a secret interest in cosplay and adventurous sexual experiences. Inspired by watching videos online, she begins masturbating regularly. She is quickly dressed in a sailor uniform for the shoot. Wearing a costume with erotic patterns, her sensitive body becomes aroused and wet almost immediately. Before her, a writhing vibrator is placed, and she climaxes quickly during her first vibrator masturbation session. Surprised by her responsiveness, the director suggests a blowjob test next. "That's... I didn't know about this..." "It happens once filming starts, so just a little... okay?" he tempts her. Will she ultimately be drawn into full penetration testing!?