Alexandria is an astronaut tasked with the solo repair of a satellite in Earth’s orbit. As she is on her spacewalk, carrying out the repairs, a piece of space debris makes impact, knocking her away from the satellite and damaging her suit. With limited oxygen remaining, she can’t afford to wait for a rescue team to arrive, so she makes the decision to first remove her glove, then her own arm in order to propel herself back to her spacecraft. She’s short one limb when she makes it back on board, but is relieved to have kept her life.