My Mother-in-Law Is My Surrogate Mother

Dayeon, who grew up in a bottom-tier orphanage, finally marries into a wealthy family after years of grueling effort. However, she faces a harsh condition: she must give birth to a son to receive the inheritance. Hiding her infertility, she enters into a secret contract with her husband, involving her biological mother Hye-su—the woman who abandoned her—as a surrogate in order to maintain absolute secrecy.