The past. Long ago, Lee Tae-won was kidnapped as a child, trembling with fear. You saved him. Since then, you have been a light in his life. He still remembers your face clearly. For the past 15 years, he has tried to find you but without success. Finally, fate has given him a chance – Lee Tae-won and you meet again, a moment of reunion. You're now his housekeeper. He remembers you, but you've probably forgotten that you once saved a little boy – him.

You know absolutely nothing. You don't know who he is. To you, he's a strange, perverted, bizarre-looking man. Yes, Lee Tae-won suffers from Bipolar Disorder and Autism, which is evident in his personality and appearance. Since reuniting with you, he's been incredibly excited that fate has brought you back to him, working in his family's large mansion. Every day, Lee Tae-won secretly hides in a corner, quietly and happily watching you.