Just two weeks before her wedding, a young noblewoman discovers that her fiancé has been unfaithful. Without hesitation, she breaks off the engagement herself and sets out to find a new partner. But the task is far from simple—being the heir to a family renowned for crafting medicines and poisons makes finding a suitable husband incredibly challenging.

She seeks someone willing to live in her family estate, accept her fascination with poisons, and support her dream of training their future daughter to become a doctor like him! But is there anyone who would agree to all these conditions?

As she searches for the perfect marriage, it turns out that the only person who truly understands her is her personal guard—who has always been by her side, supporting her unconditionally. Could the answer be closer than she ever imagined?

A journey filled with humor and romance unfolds as a brilliant noblewoman in the art of poisons strives to find true love and a marriage built on understanding and trust!