Alchemist Alya is betrayed and killed by her husband Carlos, while giving birth. Reborn ten years earlier. Carlos chooses a princess over her and pushes her off a cliff. Alya then meets Regnis, the drugged Dragon King. After one night together, she gives birth to their half-dragon son Eugene. Seven years later, Carlos and the princess target them again. Regnis returns to protect Alya and Eugene. He exposes the truth and punishes their enemies. After many trials and misunderstandings, Alya and Regnis finally find happiness together.