Rena, a wife who cares for her father-in-law, who is short in age. For Rena, who was originally a grandfather's child, nursing care was not a hardship, but an irreplaceable communication with her father-in-law. - Her husband, who does not think well of such two people who are close to each other, plans to separate them. However, Rena's feelings for her father-in-law become stronger, and eventually she hides from her husband and actively takes care of her father-in-law, Simo. Gradually, the two became a man and a woman, covered with kisses and caresses that were richer than the couple, and their bodies overlapped day and night.