When Isabella woke up, she remembered everything being poisoned by her in-laws and losing everything at their hands before dying. To avoid being married to the Rosemunds after her parents’ deaths, Isabella will do anything to become the daughter-in-law of Duke Barmouth, the feared "Mad Dog" of the empire. Worried for Isabella’s safety, Lord Barmouth treats her coldly to make her change her mind. But Isabella is set on melting the hearts of everyone at the Barmouth duchy to escape death.