Two innocent-looking Japanese schoolgirls, Lori and Mami, find themselves alone in the classroom after hours, their curiosity piqued by the promise of exploration and experimentation. With the door locked and the world outside oblivious, they begin to tentatively touch and tease each other, their hearts pounding with excitement and fear. Lori, the more adventurous of the two, leads Mami in a dance of discovery, their hands roaming over each other's bodies, seeking out new sensations and hidden pleasures.