Spacewalking begins in March 1965, when Alexey Leonov steps out of his capsule for ten minutes, and three months later Ed White does the same on Gemini 4, tethered and grinning, reluctant to go back inside. This NASA documentary traces the fifty years between those first steps and the routine maintenance runs astronauts now make outside the International Space Station. NASA Administrator Charles Bolden and Deputy Administrator Dava Newman, herself a spacesuit designer, sit down alongside astronauts, engineers, and technicians who built and wore the hardware, describing what it actually takes to keep a person alive and functional in a vacuum: the suit layers, the glove dexterity problems, the training pools, the close calls. Narrator Jon Cryer, who filmed on location at Star City and Johnson Space Center, keeps the focus on people rather than hardware specs. The film closes looking ahead to the suits being designed for future deep-space missions, treating fifty years of extravehicular activity as prologue rather than achievement.