It is set in a space station on a low Earth orbit (did I mention I'm a sci-fi geek as well :) ?) where the AI started killing off the inhabitants. One family managed to seal themselves in a section of the station that they managed to disconnect from the AI but they paid a high price for that - the father got locked outside. So it's only Greg, his mother and his step-sister that need to figure out what happened, if there are other people alive on the station and try to defeat the AI.