Ai is a widowed woman grieving the loss of her husband Makoto in a traffic accident. After the funeral, Makoto's father Toru forces her to make a difficult decision. He says that there is no reason for Ai to live with the Ozawa family now that they don't have any children. Seeing Ai's confusion, Toru's eyes change and he makes a suggestion. Toru says that if Ai were to conceive Makoto's child and carry his child, the bloodline of the Ozawa family could continue. And that night, Ai, though conflicted, decides to get pregnant and heads to Toru's room...