As a result of a space disaster, female pilot Alice Nassem is so seriously injured that doctors are forced to replace almost all of her organs with artificial ones. The unwitting culprit of the tragedy, Lieutenant Carl Stanton, by chance ends up serving on a ship under the command of Alice. At this time, an unknown object the size of a small planet invades the Solar System. Trying to find out the origin of the mysterious “guest” from outer space, the heroes find themselves in a nightmarish world full of dangers, where the main task is to survive...