On a mission on P4X-639, a planet experiencing strong solar activity, the SG-1 team encounters an alien archaeologist named Malikai (Robin Mossley). When a geomagnetic disturbance hits its peak, the Stargate activates simultaneously on the planet and on Earth, and a flash strikes Malikai, Colonel O'Neill (Richard Dean Anderson) and Teal'c (Christopher Judge) near an Ancient altar. Moments later, O'Neill finds himself in the Stargate Command (SGC) cafeteria in the middle of a breakfast conversation with Dr. Daniel Jackson (Michael Shanks) and Major Carter (Amanda Tapping), who claim to have no knowledge of the planet. O'Neill and Teal'c later express familiarity with the events, and they are checked and certified to be in perfect health. Before SG-1 can resume their planned mission to the planet, an unscheduled offworld activation of the Earth Stargate, accompanied by flashes, transports O'Neill back to breakfast.