As a killer, Yi Ruoyun fell into the sea after being designed by someone, but she didn't expect to be reborn. She was tortured in her previous life and lived an ignoble existence. She was controlled by others and wanted to control her own destiny in this life. She became him, a young man who was indifferent to the love of the world, and a girl with a... A miracle doctor with unpredictable medical skills, the owner of the Tianji Tower who leads the world's best killer organization, a prime minister who is familiar with the art of war, knows history, and has the talent to govern the country. Which one is the real him? And who can melt the thousand-year-old ice in his heart?