In her fascination with technology, a confident and spunky girl pays little attention to the outside world before learning how to make room for real things in ways that help her make the most of her savvy technical expertise.

From the discovery of the Polio vaccine to the breakthrough in mRNA vaccines for COVID-19, this exploration of scientific inquiry celebrates the greatest developments to date in vaccine science. Get to know the physicians, scientists, and other researchers responsible for these breakthroughs in medicine, and explore the ups, the downs, and the eureka moments that are science in action.