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Tiffany "Rex" Simpson has always dreamed of going to space, and her "doctored" application lands her in NASA's ultra-competitive astronaut training program. In over her head, can this Florida girl rely on her quick wits, moxie and determination to get through training and into the cosmos before she blows her cover?

Based on a true story, this film recounts the story of Diane Zamora and David Graham, two high school sweethearts who swear to always be together, even as they enter separate military academies. But when David confesses he had an affair with a classmate, Diane has an ultimatum, leading the two into a murderous pact with severe repercussions.