08.19 and 08.20 Episode 173-174
Airdate: March 18-25, 2005

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-1 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.

Scientists Dr. Daniel Jackson and Dr. Samantha Carter are summoned from their mundane jobs to meet with General Hammond at Cheyenne Mountain. An archaeological expedition in Egypt has uncovered a ZPM and a videotape with their images, claiming to be part of a team that has traveled in time, and offering details of their world so that history can be corrected if necessary. A search of the Giza Plateau reveals no stargate, only a tablet inscribed with hieroglyphics which Daniel translates. The tablet tells of a rebellion against Ra in 2995 BC which forced him to abandon Earth by ship, and he took the stargate with him.

The Egyptian tablet also describes a second stargate in Antarctica. Hoping to be included in any mission through the gate, Daniel and Carter seek the support of Jack O'Neill, who has no interest in their story or in returning to the military. Back at the base, Daniel and Carter are shown the Ancient spacecraft that was also recovered in Egypt. Dialing coordinates from the ship triggers seismic activity that Carter uses to locate the Antarctic gate. However, as the stargate is installed in the facility and a team is assembled to embark, Daniel and Carter are dismayed to learn that they will not be included on the mission.

Major Kawalsky coaxes his friend, Jack O'Neill, out of retirement for the mission to correct history. O'Neill accepts civilian scientists Carter and Daniel on the team, and they fly the Ancient spacecraft through the stargate to Chulak to find Teal'c. On Chulak, however, they are captured, and Daniel is tortured by Apophis before Teal'c is convinced by their videotape that his destiny lies with SG-1 and the free Jaffa. He helps the team to escape, but Daniel has become a Goa'uld spy, and in the firefight with Jaffa, only O'Neill, Carter, and Teal'c survive to make their escape in the spacecraft.

Unable to elude the death gliders, and realizing that Apophis has used Daniel's knowledge to launch an attack against Earth, the team must use the ship's time travel device to escape from Chulak and repair their own history. They arrive in Egypt in 2995 BC, where they meet the original Daniel Jackson. SG-1 had attempted a rebellion against Ra five years earlier, but O'Neill, Carter, and Teal'c had been killed. Now Daniel and his Egyptian allies are preparing a second revolt that will succeed, but this time the team must use the cloaked spacecraft to prevent Ra from taking the stargate with him.

O'Neill and Carter repair the spacecraft's cloak as Teal'c and Daniel coordinate battle plans. A Jaffa patrol discovers the ship, but quickly surrenders to thousands of armed Egyptian rebels. Just as history was meant to be, SG-1 leads the rebellion that frees Earth from the Goa'uld. At the SGC, it is the current timeline, and SG-1 views a videotape recovered with a ZPM from a dig in Egypt. This time, the videotape coincides with history, and the original mission to the past is not necessary. With the timeline repaired, SG-1 retires to O'Neill's cabin for a relaxing afternoon of fishing, as a fish leaps from the pond. Close enough. This episode aired in two parts.

Story by: Joseph Mallozzi & Paul Mullie & Brad Wright & Robert C. Cooper
Part One Teleplay by: Joseph Mallozzi and Paul Mullie
Part Two Teleplay by: Robert C. Cooper
Directed by: Peter DeLuise

Guest Starring: David Hewlett as Dr. Rodney McKay, Don S. Davis as General George Hammond, Robert Wisden as Major Samuels, Colin Cunningham as Major Davis, Peter Williams as Apophis, Alessandro Juliani as Katep, Jay Acovone as Major Kawalsky, David Lewis as Dr. Balinsky, James Purcell as Dr. Hirschfield, Georgia Craig as Sabrina Gosling, Jay Williams as Ra, Benjamin Easterday as Ra's Jaffa Commander, Neil Schell as Mr. Crandall, Maurico Vasquez as Student, Sina Najafi as Egyptian Boy, Christopher Pearce as Bosworth, Rob Fournier as Airman Mansfield

Reference: Ancient Gene, Ancient Spacecraft, Ancient Time Travel Device, Apophis, Balinsky, BC-304, Beta Stargate, Bosworth, Samantha Carter, Chulak, Crandall, Daedalus, Paul Davis, Egypt, Egyptian, Sabrina Gosling, George Hammond, Dr. Hirschfield, Homer, Horus Guard, Daniel Jackson, Katep, Charles Kawalsky, Catherine Langford, Airman Mansfield, Rodney McKay, Jack O'Neill, Ra, Ribbon Device, Colonel Samuels, Shock Grenade, Silver Creek, Stargate, Teal'c, Time Travel, Time Travel 3000 BC, Zero Point Module


Ancient Egypt


Alternate Earth