The first American woman to test for space flight, Jerrie Cobb, steps into an isolation tank for a record-breaking nine hours as her memories unfold before her, from learning to fly a plane as a child in Oklahoma to testifying in Congressional hearings about the under-the-radar all-female Mercury 13 space program. They Promised Her the Moon is a compelling drama about the challenges of sisterhood and fighting for the greater good, based on a true story.