Six people—four astronauts and two cosmonauts—circle the Earth. They may be among the last to do so, as the space station they live in is due to be dismantled. While they circle and observe, watching sunrise after sunset, seeing typhoons and dust storms wash across the surface below, another crew of astronauts takes off for the moon, passing them by. But their gaze remains stubbornly down, not out; down into the water and land and lights, into their own memories and histories, the deaths and lives that keep them tethered as certainly as gravity prevents them from falling away. A moving love letter to our one and only planet.