Unsupervised and curious, two young teens, Soy and Yoo, find themselves alone in the house. Their innocent playtime takes a turn as they begin to explore each other's bodies, tentatively at first, then with growing enthusiasm. Soy's small hands trace Yoo's lean muscles, while Yoo gently cups Soy's budding breasts. They learn about each other's pleasure points, their breaths quickening as they inch closer to the edge of their newfound desires.