As astronaut Lucy Cola (Natalie Portman) gazes at Earth from afar while on a mission, her view of the pale blue dot profoundly shifts her entire perspective. When she returns, all Lucy wants is to go back to space - no matter what. Her modest family life loses its allure and the comforting support of her gentle husband Drew (Dan Stevens) is suddenly less appealing than the masculine charisma of a fellow astronaut, Mark (Jon Hamm), a divorcee disconcertingly eager to encourage an affair. As she determinedly trains for her next mission, her growing dissociation threatens to dismantle both her personal and professional lives.