When Mabelline sets out on a journey to visit her pen pal Rosa, she doesn't expect to be staying quite as long as she does. Mabelline quickly takes Rosa and her son Carlos to her heart, but she knows right away there is something different about the boy. When tragedy occurs, Mabelline becomes responsible for Carlos as he struggles to fit into a world based on rules he doesn't understand, and finds himself in serious trouble.

This unlikely pair takes us on an emotional journey that warms the heart whilst illustrating the difficulties someone with Asperger Syndrome encounters trying to hold down a job as a flower grower, make friends, talk to girls, and cope with life.