Dr. Ryan Stone, a remarkable scientific engineer on her first Shuttle challenge, with veteran astronaut Matt Kowalsky in charge of his last flight before retiring. But on a apparently habitual spacewalk, catastrophe moves. The Shuttle is destroyed, leaving Stone and Kowalsky absolutely by myself-tethered to not anything however each other and spiraling out into the blackness of space. The deafening silence tells them they have misplaced any hyperlink to Earth and any risk for rescue. As fear turns to panic, each gulp of air eats away at what little oxygen is left. But the handiest way domestic can be to go similarly out into the terrifying expanse of space.