Fighting fire-breathing dragons is difficult even for a brave knight like Peter, but when he cannot breathe, it becomes next to impossible. My Lady (Mom) comes to his rescue with Puffy, his inhaler, but the two decide that a trip to the doctor is in order. Readers will get an accurate picture of what happens at the doctor’s office, from using a peak flow meter and being examined to talking with the doctor about what seems to trigger the attacks. With the help of his new medicine, inhaled through a nebulizer, Peter can finally conquer that dragon…just in time to see a new monster arise from the moat. Backmatter includes a note from a pediatric pulmonologist giving parents the basic facts about asthma. Lewis’s watercolor illustrations portray an ordinary boy with an active imagination who does not let asthma slow him down or keep him from his adventures. The inside peek at the medical appointment will reassure those readers facing similar office visits. Its mission is in plain view, but those kids and parents facing an asthma diagnosis will be grateful for it. (Picture book. 4-7)