Episodes: 20 | Released: 2006 | Certificate: PG | Genre: Sci-Fi/Fantasy | Director: William Waring
Actors: Richard Dean Anderson
, Christopher Judge
, Don R Davis
, Amanda Tapping
, Anna Louise Plowman
, David Palffy
Following their defeat by the Ori motherships that came through the supergate, SG-1 struggles to overcome massive setbacks. Without the use of the now-damaged Odyssey's beaming technology, Mitchell (Ben Browder), must find a way to rescue Carter (Amanda Tapping), who is stranded in space and quickly running out of life support.
After learning that the Ori have successfully infiltrated six more galaxies, SG-1 goes off-world to find an Ancient weapon that Daniel Jackson (Michael Shanks) believes is the key to defeating the Ori. SG-1 travels through the gate and discovers a village in which all the inhabitants died of a mysterious illness.
"The SG-1 team travels to Atlantis to attempt to establish a stable wormhole to the Ori supergate, which will prevent the Ori from sending more ships to Earth's galaxy. In order to do so, Carter (Amanda Tapping) and McKay (David Hewlett) must detonate precisely calibrated nuclear warheads to cause a wormhole to “jump” from a nearby spacegate to the supergate, without destroying their ship, the Odyssey, in the process. Meanwhile, Daniel (Michael Shanks) and Vala (Claudia Black) take advantage of their time at Atlantis to research the Atlantis database for clues to the location of Merlin's weapon. During their research, they are met by Morgan Le Fay, an ascended Ancient posing as the Lantian holographic interface, who gives them the names of two planets where the device might be located. But can she be trusted? Weir (Tori Higginson) detects a Wraith ship headed towards the Odyssey, and is unable to relay the message due to the interference of the nearby black hole. And the Odyssey detects an Ori ship headed toward the supergate. Will the team be able to complete their mission before they are attacked?"
As SG-1 continues to piece together clues to the whereabouts of the elusive Ancient weapon that could defeat the Ori, an alien vessel streaks into Earth's atmosphere towards the SGC. When the vessel does not respond to hails, it is shot down and crash lands. To everyone's surprise, the pilot is none other than Ba'al (Cliff Simon).
"As the rest of SG-1 prepares to join Landry (Beau Bridges) and Mitchell (Ben Browder) on a retreat, Teal'c (Christopher Judge), who is assisting the SG-3 team, discovers that the inhabitants of a distant planet are being mutilated by a savage and elusive alien creature. While SG-1 fears the Ori's sinister work is at play, they soon discover the creatures are being created by a parasite not indigenous to the planet. Meanwhile Mitchell and Landry are the object of surveillance while staying at General O'Neill's cabin. As SG-1 receives word that the creatures are appearing on other planets are also, Mitchell discovers some hunters who have been the victim of a similar attack on Earth. Desperate to find the origin of the parasites, the team makes an alarming discovery: not all planets affected by the attacks were visited by the Ori, but they were all recently visited by SG-1. Horrified to discover that they could somehow be at fault, SG-1 must determine how to stop the creatures before they kill again."
"Martin Lloyd (Willie Garson), last seen in Wormhole X-treme, returns to the SGC looking for assistance from SG-1 with his feature film script. The team is reluctant, especially Lt. Colonel Cameron Mitchell (Ben Browder), who is excited about his next off-world mission, which marks his 200th trip through the event horizon. However, when technical glitches prevent the team from gating off-world, they are stuck in the boardroom under the orders of General Landry (Beau Bridges), because the Pentagon believes a successful science fiction film about intergalactic wormhole travel will serve as a good cover story to keep the Stargate Program a secret. The notes session, however, quickly devolves into the team members pitching their own versions of a successful sci-fi film – including tributes to The Wizard of Oz, Star Trek, a younger and edgier SG-1, and even a wedding that showcases the return of General Jack O'Neill (Richard Dean Anderson)."
SG-1 is doing recon on a planet where Adria (Morena Baccarin) appears, now the fully-grown leader of the Ori Army. Meanwhile, unbeknownst to SG-1, the Jaffa have modified the Ancient device SG-1 used to destroy the replicators so that it now unmakes all living beings. The Odyssey beams SG-1 off the planet just before the Jaffa's new leader, Se'tak, deploys the Ancient weapon. Se'tak believes the weapon is the Jaffa's only means of battling the Ori, regardless of the casualties.
Out for a celebratory dinner with Daniel (Michael Shanks), Vala (Claudia Black) is kidnapped by Trust agents working for Athena, a Goa'uld searching for the code to an Ancient treasure map. Athena hooks Vala up to a memory reading device so she can search her memory for the code, told to Vala when she was the host to a Goa'uld named Que'tesh.
"On a mission to investigate rumors of a second Ori supergate in the Milky Way Galaxy, the Odyssey, with Lt. Col. Carter (Amanda Tapping) aboard, is attacked by Anateo, a former captain of the Lucian Alliance. After receiving the Odyssey's mayday transmission, SG-1 sets out to find the Odyssey and save its crew. Vala (Claudia Black) and Daniel (Michael Shanks) track the Odyssey's subspace beacon to a chop shop on a nearby planet, but it turns out to be an ambush and Daniel and Vala are captured and brought aboard the Odyssey. Having run out of options, SG-1 decides to use the Reole Chemical – a drug that causes people to believe they are seeing someone else – to allow Lt. Col. Mitchell (Ben Browder) to infiltrate the Lucian Alliance posing as Kefflin, another captain in the Lucian Alliance and the old friend of the Alliance's leader, Netan. Mitchell discovers that Netan double crossed Anateo by sending him on a suicide mission to take the Odyssey in order to solve some of the Alliance's internal political struggles. But now that Anateo has succeeded in taking the Odyssey and half of SG-1, he intends to discredit Netan and take control of the Lucian Alliance himself. As Carter, Daniel and Vala hatch a plan to retake the Odyssey, Mitchell learns of the Odyssey's true location, but is identified by Tenat – a rogue agent aboard Netan's mothership. Now Mitchell must pull a double cross of his own, or else be discovered."
"Having failed so far to find the Sangraal on any of the planets uncovered by Daniel's (Michael Shanks) research, Vala has a dream that provides SG-1 with the information they need to locate the planet. SG-1 arrives at a medieval village and is told by the local villagers that another group has already arrived and set off in search of the Sangraal, and based on the descriptions, it's obviously led by Ba'al (Cliff Simon). The townspeople warn SG-1 that no one has succeeded in the quest to find the Sangraal. Undaunted, SG-1 goes to the village library and meets Osric, the keeper of the archives. Osric shows them the parchment of virtues, left by Morgan Le Fay for all those who seek the Sangraal, but Osric refuses to share the map she also left behind. However, when the Ori army arrives to convert the village and burns the contents of the library, Osric seeks out SG-1 and offers to help them find the Sangraal, having memorized the contents of Morgan Le Fay's map. SG-1 then encounters a series of obstacles and traps left by Morgan Le Fay to weed out unworthy seekers of the Sangraal. SG-1 deciphers a way through a temporal distortion maze, and then discovers Ba'al, trapped in a force field and abandoned by his Jaffa servants. Ba'al claims to know the name of the protector of the Sangraal, so they allow him to join them on the quest. And he is not their only unwanted companion. Osric morphs into Adria (Morena Baccarin), and forces SG-1 to take her along on pain of death. The unlikely group heads into the caves to pass the final tests and confront the protector of the Sangraal, or die trying."
"Proving worthy of the last obstacle (the dragon) SG-1 along with Adria (Morena Baccarin) and Ba'al (Cliff Simon) try once again to remove the Sangraal. Still unable to remove the jewel all but Adria are transported to a hidden cave where they find Merlin (Matthew Walker) encased in ice. Apparently a plan by Morgan Le Fay to destroy the Sangral but preserve the man who could construct another, hiding his whereabouts by using an obelisk and Stargate to relocate the cave at set time intervals. Reviving the old mage Daniel Jackson (Michael Shanks) explains the new struggle against the Ori and convinces him to again build a device to destroy them. While Merlin labors over building the Sangraal from base elements, Carter (Amanda Tapping) and Ba'al work to disable the transporting safeguard so they can use the Stargate to dial earth. With Merlin weakening by the stress of building the device he is left no choice but to transfer his consciousness into Daniel's body. Daniel, now empowered by Merlin's consciousness, races to complete the device. But having disabled the safeguard the gate is suddenly activated and within moments Adria and an Ori army descend on the site. Before he is able to finish the device Daniel must choose between saving the team and allowing Adria to take himself prisoner along with the nearly finished weapon."
After several successful tests using Merlin's device to take objects and areas out of phase, General Landry (Beau Bridges) sends SG-1 to use the device to protect a village from an aggressive Prior. Greeted by the village leader Thilana (Aisha Hinds) SG-1 sets up Merlin's device and uses it to successfully take the entire village out of phase. But when the displacement field collapses bring everything back into phase, the team must act fast to fix the device before the Prior and his army return.
Working with Merlin's phasing device, Carter (Amanda Tapping) is mistakenly pulled into a parallel reality where her double is attempting to draw energy from other such realities. With their Carter killed in the experiment the real Carter must step in to help a desperate Stargate Program from stopping a would-be attack from the Ori. Carter is questioned and ultimately recruited to help the efforts by the head of Stargate Command General Hammond (Don Davis). Successfully able to move the entire planet out of phase using Merlin's device moments before an Ori attack, Carter is hailed a hero by President Landry (Beau Bridges). The President, who has had the country under martial law since the chaos that emerged when the public was made aware of the Stargate, tries to use Carter's cache as an American-hero to not only convince the public they are again safe but to secure his presidency. Carter soon realizes that the president has no intention of allowing her to try to recreate the experiment that brought her there in hopes of returning home again. She is forced to request the help of her ex-husband a multi-millionaire dot comer named Rodney McKay (David Hewlett) and the advice of a paraplegic ex-302 fighter pilot, Cameron Mitchell (Ben Browder) in a hope to find a way back to her proper reality.
"SG-1 learns of a new Prior spreading the word of the Ori in a more humane way then ever before and decides to investigate. When the new prior turns out to be Daniel Jackson (Michael Shanks) the team elects to save him even though it's very likely a trap by Adria (Morena Baccarin). Transported and held captive on the Odyssey Daniel explains his becoming a prior is all part of an elaborate plan that he and Merlin, who is still partially in control of his consciousness, have devised to trap Adria and the Ori. Though his story seems to honestly prove how he gained Adria's trust only to use Merlin's device against her, his plan requires SG-1 to close the wormhole that is blocking the Supergate. With the Supergate functional there would be nothing stopping the Ori from sending their armies through to earth's galaxy. Whether or not they aid him with his potentially catastrophic plan becomes mute when the IOA decides Jackson poses too great a risk and must be killed. Col. O'Neill (Richard Dean Anderson) not willing to let his friend be sentenced to death works with the SG-1 team to find a way to finish Merlin's weapon and send it through the gate to destroy the Ori. But when Jackson is able to escape imprisonment and hijacks the Odyssey along with Col O'Neill it appears that his plan was really just a way of delivering SG-1 and the finished Merlin device to Adria."
Following the destruction of one of his shipments and in light of their constant undermining of his power Netan (Eric Steinberg) decides the only way to deal with SG-1 is to put a bounty out on their heads. As the word gets out, a competing group of bounty hunters descend on earth hoping to claim the bounty.
Following a cartouche to what they believe is a store house of Ancient's treasure the SG-1 Team find themselves trapped in a museum on a world that has yet to discover the secret of the Stargate. Without a DHD to dial-out their plan to wait for Stargate Command to send help is cut short when they are discovered and mistaken for a militant group of rebels.
The bombing massacre of a Jaffa leaders summit not only kills dozens of innocent Jaffa, but also leaves Bra'Tac (Tony Amendola) clinging to life and Teal'c (Christopher Judge) badly injured. With his hands tied by the IOA, General Landry is unable to give Teal'c the help he asks for to hunt down the man responsible. Teal'c believing the hypocritical IOA would not sit so idle if those dead had been humans takes it upon himself to leave SG-1 and hunt down the man responsible himself.
To Vala's (Claudia Black) dismay her father Jacek (Fred Willard) contacts Stargate Command claiming to have knowledge of Arkad's ships that were en route to bomb earth when he was killed by Teal'c (Christopher Judge). With it likely, the mercenaries still believing they are to follow through with their bombings, SG Command is forced agree to the deal. Regardless of Vala's warnings about Jacek's devious and scamming nature General Landry (Beau Bridges) has no option but to grant him sanctuary on earth after his information proves to be true.
"Believing Vala (Claudia Black) to have escaped imprisonment by the IOA after being deemed too large a risk, Adria (Morena Baccarin) hopes to finally ally alongside her mother. The two attempt to uncover the Clava Thessara Infinitas, storehouse of infinite ancient treasure, only to learn the address and Vala's memories are just an elaborate trap by SG-1 to capture Adria. The tables quickly turn as the team themselves are ambushed and Adria taken captive by Ba'al (Cliff Simon). The team quickly scrambles to locate Ba'al and retake Adria in the hopes of either convincing her to leave the galaxy with her army or have her killed. Intel of a meeting of Ba'al's forces reveals that the real Ba'al has killed off all of his clones. While on Ba'al's ship he explains to Adria he plans to implant her with his symbiote to take control of her body and therefore of her army. SG-1 aboard the Odyssey track Ba'al's ship and are able to retake Adria and kill Ba'al at the same time. However back aboard the Odyssey they learn they might have been too late as Ba'al's symbiote is already in control of Adria. With no other way, SG-1 brings in the Toakra to remove Ba'al's symbiote and implant Adria with one of their own in hopes to use Adria's body to command the Ori out of the galaxy. Ba'al being true to form doesn't go easily, injecting Adria's nervous system with a slow acting toxin. Adria back in control fights to keep herself alive long enough to ascend, but with SG-1 trapped outside the operating room it's up Vala to kill her own daughter before she can ascend to join the Ori."
Summoned by the Asgard SG-1, lead by General Landry (Beau Bridges) aboard the Odyssey, learn the Asgard have only a short time left to live. Their final attempt to solve their physiological degeneration resulted in each of them developing a rapidly progressing disease leaving them only weeks to live. Fearing their knowledge might fall into the wrong hands they plan to end their lives after handing over their entire knowledge base, technology and history to SG-1. But before all the final advancements can be installed on the Odyssey the Ori drop out of hyperspace and engage the ship. As the Odyssey retreats pursued by one of the Ori ships the Asgard destroy their planet taking the other two Ori ships with them. The Odyssey with shields nearly failing is forced to test their new Asgard weapons and is barely able to destroy the Ori ship in time.
