Troubles brews in Atlantis when General O'Neill sends a new recruit their way - ex military, tough, mouthy and more than just a little sexy. She immediately causes problems and then her true reason for being there becomes clear as a conspiracy unfolds...

The stargate activates on Atlantis and a surprise visitor from earth arrives through... but she did not come through the SGC. John and the rest of the team are drawn into the mystery that surrounds her arrival...

John wakes up with a hot earth sun burning down on him, sand underneath him and little memory as to how he got there. His last memory is of embarking on a mission in the Pegasus Galaxy. How did he arrive back on earth, fifty years earlier?