The Device

When Rodney McKay and Tayla discover a weird looking device in some Runes on a distant planet that they bring to Atlantis, Lt. Col. John Sheppard is sucked into a reality that is completely different, and much more deadly than the one he is used to living in. Here, some sort of plague wiped out the Atlantis crew, leaving only a few who now have unique skills to combat their surroundings.