In the midst of puberty, two sisters share an unexpectedly intimate bond hidden beneath their everyday lives. Living together as family, they gradually begin to develop uncontrollable erotic feelings for each other, which awaken one day through a small, seemingly insignificant incident. Overwhelmed by a mix of embarrassment and excitement, they slowly start confessing their desires to one another. As their arousal grows stronger each day, they lose themselves in the presence of the sister—forgetting boundaries. Their physical distance closes rapidly, until they are feeling each other at zero distance, stimulated by the texture of skin and the rhythm of their breathing, driving them to one orgasm after another. Their relationship deepens beyond limits—will it reach an end, or mark a new beginning? The answer lies only between the two of them.