She was originally the legitimate daughter of the general who ruled the country. During a war, her father changed from a founding hero to a treasonous criminal. The bad news came and her family members were all bereft. However, an imperial edict made her the Princess of Lausanne, and she was favored. How can she face the sudden trust and attachment of the emperor, the public respect and awe of everyone in the harem, but the secret turmoil? What kind of secret is hidden behind the sudden appearance of Sheng En, and how does she struggle to survive step by step in this complicated palace and court...