The story is based in the Bronx, New York, and tells of a curious young second grader, Marcus, who is interested in becoming a doctor. He wants to know what doctors do at work and how they help people. His grandmother's resourcefulness leads them on an adventure to their local community health center, where they meet a variety of healthcare professionals: a Dentist, an Allopathic Doctor (MD), an Osteopathic Doctor (DO), a Podiatrist (DPM), and a male Nurse (RN). What does Marcus learn by going on this adventure? How does he react seeing relatable doctors that look like him?