Maddy was born with a disease called immunodeficiency (SCID), she is basically allergic to everything outside. Her dad and brother died in a car accident, so now it's just her and her mother. No can enter their house unless her mom approves it. Maddy and her mom have a routine of palying board games and watching movies every Friday.
A new family moves next door, and they have a daughter and son. Maddy is interested in the boy next door named Olly and they started emailing, and texting a lot. She gets so caught up in talking to him she wants to meet Olly in person. Maddy begins begging her nurse Carla to let him come over, and she tells Carla that they would be on opposite sides of the room when they meet. Carla gives in and lets Olly and Maddy meet, but there could not be any touching.
Maddy and Olly meet 2 times before something very big happens. Olly's dad is a drunk and gets violent some nights, and Maddy can hear Olly's dad yelling at him every night. One day, Olly's dad was louder than usual and Maddy went to look out her window, she could see Olly's dad become very angry. His dad striked him and that's when Maddy decided to go outside, and make sure Olly was ok.
Maddy's mom finds out that Carla let Olly into their house and becomes angry, and decides that she was going to fire Carla. Her mom limits her internet privileges, and gets her a new nurse. Her new nurse's name was Janet and she was a very strict and annoying nurse. Maddy couldn't take it anymore, and decides that she is going to run away with Olly to Hawaii.
They go to Hawaii and Olly takes her to the ocean, and lets her swim for a very long time. One night she had severe pain and Olly rushes her to the hospital, where her heart stops and has to be resuscitated. Her mom comes to Hawaii and takes her home. Weeks later, Maddy recieves a email from the hospital and it says that she doesn't have SCID. Maddy is horrified because she realizes that her mom has kept her locked away, because of her paranoia.
During those weeks, Olly, his mom and his sister decide that they were going to move to New York. Maddy decides that she wants to go visit Olly and books a flight to New York. They meet at a local book store, and that's where there romance began to restart for them.