Amelie looks like any other four-year-old, playing dress-up as a princess and chasing after her siblings, except that she is roughly the size of a toddler and will likely never grow taller than a few feet. The film follows her family as doctors work to diagnose the rare form of primordial dwarfism behind her condition, and as her parents weigh what her small stature will mean for her health, her schooling, and her future independence. Interviews with her mother and father sit alongside home footage of Amelie's daily routine, from birthday parties to medical appointments, showing a child who is by every account developmentally sharp and stubbornly normal in personality even as her body defies typical growth charts. The film treats her condition as a medical mystery rather than a spectacle, following specialists as they compare her case to a handful of others recorded worldwide and try to explain what makes her particular form of dwarfism so unusual.