*Following the passing of Catherine Langford, Daniel finds among her possessions documentation of the existence of a ZPM on Earth at the time of Ra. A ZPM is essential to power Earth's Ancient defenses, and O'Neill reluctantly agrees to Daniel's proposal to travel back in time to recover it. SG-l uses the Ancient spacecraft to travel to Egypt in 3000 BC, and their mission to steal the ZPM from Ra's temple succeeds. However, they are unable to return to the present without the risk of altering history. Forced to remain in the past, the team inadvertently sets into motion a spiral of events that will play out exactly as it was meant to. *Source: Back of card