Madeline Whittier lives her life in a white, monotonous bubble where every day is the same as the last. Until a new family moves in next door and her eyes are met with ones resembling the Atlantic ocean. These eyes belong to a boy named Olly, and he will change her monotonous life into one that she never knew she wanted or ever expected to have. Maddy – a nickname given to her by her new, secretive friend – lives her life through books and learns the truth, or what she believes to be the truth, about people and the world around her. But only through true desire, breaking rules, and exploring the world itself with her own eyes can she learn the truth. And the truth is nothing like what she was expecting.

Diagnosed with SCID as a child, Maddy is told that she can never leave the house. Seventeen years later and she knows nothing but the inside of her own home, her mother, and her daily nurse and caretaker. But Maddy's exploration raises an important question: is she actually sick? Or is there a case of Münchausen by Proxy controlling her young and monotonous life?