Everything, Everything tells the story of Maddy, a girl who's literally allergic to the outside world, and Olly, the boy who moves in next door and becomes the greatest risk she's ever taken. Maddy's disease is as rare as it is famous. Essentially, she's allergic to the world and has not left her house in seventeen years. The only people she ever sees are her mom and her nurse, Carla.

But then, a moving truck arrives next door. Maddy looks out her window, and she sees him. He's tall, lean, and dressed entirely in black. When he catches Maddy looking, they share a moment. His name is Olly. Maddy wants to learn everything about him, and as she does, she finds that talking to him makes her whole world open up. She begins to change, to want things, to want out of her bubble—to want everything, everything the world has to offer.

While it's impossible to predict the future, some things are certain. For example, Maddy is definitely going to fall in love with Olly. And it's almost certainly going to be a disaster. Yet, through this journey, Everything, Everything will make you laugh, cry, and feel everything in between. It's an innovative, inspiring, and heartbreakingly romantic debut novel that unfolds in a unique manner, including vignettes, diary entries, and illustrations.