For Henrietta Leavitt, heaven is the night sky. When she's hired by the Harvard Observatory, doors seem to be opening for her. But it's 1900, and women aren't even allowed to look through the telescope. They must chart the stars from photographs and keep their ideas to themselves. Undaunted, Henrietta quietly pursues her own revolutionary theories as family ties, societal pressure, and love pull her in other directions. This lyrical drama is based on the true story of a pioneering astronomer whose discoveries have helped us measure the vast reaches of space.