Struggling with infertility, a young couple can't give up on having a child. After getting tested following their marriage, they discover the wife is infertile. After much deliberation, they make the difficult decision to ask the husband's mother to become a surrogate. One night, the couple hands the mother a medical diagnosis letter and tearfully plead, "Please, carry my child for me." Touched by her daughter-in-law's pain, the mother reluctantly agrees. Days pass as they confirm the mother's ovulation window, beginning repeated intercourse between the daughter-in-law's husband and the mother for the sake of the child. Initially tense, they gradually grow accustomed to each other, climaxing repeatedly as semen is released deep inside. Several months later, the embryo successfully implants and the baby begins developing steadily. As the child grows, the woman's own long-dormant desires awaken, marking the beginning of a new chapter in her life.