Things haven't really been the same since Papa got the phone call. He doesn't want to go to the museum or baseball games anymore. That feels a little weird. He and his son spend more time these days at home or at the park. Papa also has all these doctor's appointments now. His child begins to wonder if he got his dad sick. When he asks about it, Papa tells him what's going on: he has cancer. Told from the viewpoint of a child and beautifully illustrated, The Biggest Thing explores a cancer diagnosis, the treatment that follows, and the sources of strength a family finds along the way.

Readers will find the story inspiring and comforting without making false promises. Based on the author's own experience, the story is meant for a caregiver and child to read together, and the ending is open-ended so that it can be tailored to an individual child and situation. The back matter includes suggestions and helpful advice for starting the difficult conversation and answering your child's questions.