A part-time and hardworking girl named Kim Haeun took the job that nobody in the world dares to for she was in a real financial trouble. Desperate for a job, she applied as a servant to the one and only-Park Chanyeol, who lives his luxurious life without worries except one: he's getting engaged to a woman he doesn't know. He wants a perfect girl but there's no woman like that. A cold Park Chanyeol? Maybe just a facade.