After the eldest princess Zhu Sha was deposed, she lived in seclusion in the mountains. She just wanted to spend the rest of her life growing flowers and making wine. Until one day, a woman covered in blood fell in front of the door - she was actually Feng Qingci, a young woman who was sent to the enemy's country by her own hands ten years ago. Back then, Zhu Sha gave up the person she loved most to protect the country, but now Feng Qingci returned with the enemy's military files and said with a smile: "Your Highness owes me, it's time to pay back." One is a useless princess who abandoned the country, and the other is a female general who betrayed the enemy. They conspired to subvert the entire world.