Emma always wanted to see a ghost, though she never believed in them. She often opened up the dangerous desire in front of her beloved fiancé, but Henry always denied it. She never listened to her fiancé, and she was always looking for the opportunity to open the gates upside down, and experience that world.
Finally, she got the chance to enter that world, there she encountered Noah, who was nothing but just an invisible shadow upside down, whose red-blooded eyes had never seen the beauty of the human world. He fell for her and now she had to suffer the consequences of her stupidity.