A test of the X-301, an experimental spacecraft adapted from two Goa'uld Death Gliders, goes awry, sending Col. Jack O'Neill and Teal'c hurtling out of Earth's orbit. As the X-301 streaks through space at a million miles per hour, Stargate Command struggles to find a way to retrieve it. After an attempt to alter the spacecraft's course fails, things look grim. Dr. Daniel Jackson seeks the help of offworld allies. He learns that the Tok'ra have a ship capable of reaching O'Neill and Teal'c, but it is on a covert mission in Goa'uld-controlled territory. With time ticking down and the lives of their comrades hanging in the balance, Daniel and Maj. Samantha Carter must locate the Tok'ra ship, intercept the X-301, and pull off a daring rescue.