This special deals with how the SG-1 series intertwined many of Earth's mythologies into its plots and story lines, and about the many alien character connections with Earth's great mythological figures.

Mitchell, Carter and Teal'c arrive on a planet being threatened by the Ori. They decide that a line needs to be drawn and that the Ori must not be allowed to advance any further. Carter attempts to use the Ancient Merlin's technology to prevent the Ori from taking over the planet.