Template:819precis

When Catherine Langford dies,Daniel inherits her collection. He finds reference to a Zero Point Module (ZPM) in a book about Ra in Egypt in 3000 B.C. SG-1 use the Ancient time machine to go back in time to retrieve the ZPM but when their ship is discovered, they create a different future in which the SGC does not exist and their alternate selves lead very different lives.