In the early ’60s, as NASA’s Mercury program was gearing up to send America’s first astronauts into orbit, a group of women went through a secret testing program to see whether they could survive the physical and mental stresses of traveling into space. Thirteen women passed with flying colors, including a young pilot named Wally Funk. This is the story of Funk and the “Mercury 13" -- a tale of strange medical tests, of a push for equality in space exploration, and of an establishment that wasn’t ready to see women fly.