LEE Kyung-jin adalah salah satu tokoh paling kuat di Joseon tetapi telah dihadapkan dengan krisis keluarga – putranya ditemukan tewas pada hari pertama pernikahan mereka. Ditinggalkan hanya dengan putra bungsunya, Myung-kyu, LEE membawa Ok-bun dengan harapan dapat menghindari kematian lagi tetapi Myung-kyu juga meninggal saat menghabiskan malam pertamanya dengan Ok-bun sebagai pasangan yang sudah menikah. Meskipun demikian, Ok-bun, yang dijual demi uang, hamil, dan menjadi menantu perempuan termuda. Dia menderita permusuhan parah dari wanita lain dalam keluarga sementara serangkaian pembunuhan brutal dan insiden misterius terjadi di rumah mereka. Ok-bun segera menyadari bahwa nyawa anaknya yang belum lahir dalam bahaya besar.
LEE Kyung-jin is one of the most powerful figures in Joseon but has been faced with a family crisis – his sons were found dead on their first day of marriage. Left with only his youngest son, Myung-kyu, LEE brings Ok-bun in the hopes of avoiding another death but Myung-kyu also dies while spending his first night with Ok-bun as a married couple. Nonetheless, Ok-bun, who was sold for money, gets pregnant, and becomes the youngest daughter-in-law. She suffers from severe hostility from other women in the family while a series of brutal murder and mysterious incidents occur in their home. Ok-bun soon realizes that her unborn child’s life is in grave danger.