A mysterious relationship between mother and son. Even as the son has grown into adulthood, the two continue to bathe together every day. While the mother watches over her son's growth, she harbors feelings she can no longer suppress. Inside the warmth of the bath, her gaze lingers on her son's body, and she finally reaches out. This ordinary moment now takes on an entirely new meaning, as the bond between mother and son deepens in a different way.