Asha and Baz face a class challenge about cardinal directions (North, East, South, West). They travel back in time to meet Gladys West whose math helped to create modern-day GPS.While visiting the community garden with their class, their teacher assigns a challenge: use a compass rose and a map to uncover parts of a secret message hidden around the garden.When trying to follow the instructions on the map leaves the best friends feeling lost, they look to the past for guidance. Together, they magically travel to 1978, to meet mathematician Gladys West.Gladys is working on her own important project using a satellite to map the ocean, and with her help, Asha and Baz might just find their way.