Madeline is very sick. She has a compromised immune system and she basically can’t leave her house. The air in her house is purified and filtered, her books have to be wrapped and packaged in a special way, and everything must be clean. She is just living her everyday life when all the sudden, a cute boy about her age moves in the house right next to hers. Madeline can’t just help but wonder what he is like and more importantly what a life with him would be like. Maybe one day she will find out.