Imagine being allergic to the world.

For seventeen years, Maddy has been confined to her home, her life defined by sterile walls and filtered air. The only people she knows are her overprotective mother and her caring nurse, Carla. She's never stepped outside, never felt the sun on her skin, never breathed in the fresh air.

Then Olly moves in next door. Mysterious and full of life, he's everything Maddy isn't supposed to want. Yet, through stolen glances and silent messages, an undeniable connection forms.

How much is Maddy willing to risk for a taste of the world beyond her bubble? Is love worth defying everything she's ever known?

Her heart tells her to leap, but one step could change everything—or end it all.