She is his maid. They were childhood sweethearts, but they were in the wrong family. He is the devil in her heart, but she is the only one in his heart. How should he choose between love and freedom? So who is the angel in her heart? When love meets friendship, how should she choose? There are many difficulties between them. How should she control her own happiness? When she finally understood her own mind, had she changed her mind? Have they missed each other?