There are twin princesses in the palace, one is capable of literature and the other is capable of martial arts, but something unexpected happens. The life and death of the elder sister is uncertain, and the younger sister practices martial arts with a desire for revenge just to assassinate her original brother and sister. After a year of experience, she changed her mind and actually led troops to fight for the enemy. She once defended an empty city alone, became blind and injured her meridians. Marrying a prince, the elaborate beauty trap eventually backfired on her. The person I couldn't bear to hurt all this time is actually not the person in my memory? Falling in love, she saw her sister again after giving up her martial arts skills, but she became the enemy's military advisor. In order to save the prince, she jumped into the cliff. Kill the emperor and it turns out that he is their biological father? The great cause of the country, taking over the world, looking back, but she has long since disappeared...