Season Four

4.01 "Small Victories Part 2"

4.01 "Small Victories Part 2"

SG-1 is called upon to help a race of gentle, highly intelligent aliens struggling against a swarm of ravenous, deadly mechanical spiders called replicators. But the situation becomes much more complicated when a lone replicator is discovered in the most unlikely of places…back home on Planet Earth!

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4.02 "The Other Side"

SG-1 responds to a cry for help from a doomed civilization, which promises to give Earthlings access to highly advanced technology in exchange for supplies that would help them defeat their enemies. But the team soon discovers a shocking secret that may prove that SG-1 is doing a lot more harm than good!

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4.03 "Upgrades"

SG-1 is selected to test the effects of alien tech military wristbands on human wearers, and soon find themselves blessed with spectacular strength and speed. But when they are sent on a mission utilizing these new abilities, they learn a shocking lesson about the downside of power.

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4.04 "Crossroads"

When a beautiful high priestess from the planet Chulak claims to have a plan that would seriously cripple the Goa'uld, everyone is understandably skeptical. SG-1 must join forces with the Tok'ra in order to put her plan into effect, but a deadly, hidden secret could jeopardize the entire operation!

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4.05 "Divide And Conquer"

When an SGC soldier under the influence of a Goa'uld mind control device attempts to assassinate a High Council member, SG-1 must uncover other potential assassins—even amongst themselves—before the president arrives for a crucial summit meeting.

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4.06 "Window Of Opportunity"

After SG-1 visits a strange planet in the middle of a geomagnetic storm, they find themselves repeating the same day over and over again. The team must utilize their accumulated knowledge to stop the time loop before there are disastrous consequences across the universe.

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4.07 "Watergate"

SG-1 joins forces with a beautiful Russian scientist to investigate a rogue Stargate in Siberia, linked to a mysterious water planet. The team must venture via submarine to the water planet, where they encounter an unexpectedly terrifying alien precense that just might destroy them all.

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4.08 "The First Ones"

During an archaeological survey of fossils on a Goa'uld planet, Daniel Jackson is abducted by a fearsome humanoid creature, prompting SG-1 to embark on a mission to free him from his alien captor. But Daniel soon learns that the creature's intentions are not at all what he thought.

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4.09 "Scorched Earth"

After relocating an endangered civilization to a "safe" new planet, the team realizes that another race of aliens is planning to incinerate the planet's surface to make it inhabitable for their own race. Will SG-1 be able to reason with the marauding aliens, or will their plans for interplanetary diplomacy go up in flames?

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4.10 "Beneath The Surface"

With their memories erased and their identities changed, SG-1 find themselves trapped below a domed city on a planet of ice, toiling as slave laborers. Can they come to their senses and make a break for the surface, or will they remain enslaved underground for the rest of their lives?

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4.11 "Point Of No Return"

When a quirky conspiracy theorist contacts SG-1 claiming to know classified information about the Stargate, at first they think he's bluffing. But when they investigate his wild claims, they realize he's a lot closer to the truth than they thought…and has a few more shocking surprises up his sleeve.

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4.12 "Tangent"

When O'Neill and Teal'c take an SGC-modified Goa'uld glider out for a test flight, they lose control and are sucked deep into outer space by a Goa'uld tracking device. It's up to the rest of the team to figure out a way to rescue them, before they run out of oxygen and life support and are lost in space forever.

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4.13 "Serpent's Venom"

SG-1 travels to a remote interplanetary minefield to sabotage a hazardous alliance between two powerful Goa'uld System Lords. But their mission becomes far more dangerous when they realize Teal'c has been captured by one of the Lords, who plans to use him as a pawn in their evil negotiations.

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4.14 "The Curse"

When Daniel Jackson returns to Chicago to attend the funeral of his mentor, a celebrated archaeologist, he soon realizes that the death is mysteriously connected to the recent discovery of a 10,000-year-old Egyptian artifact that might be cursed by a vengeful pharaoh.

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4.15 "Chain Reaction"

When SGC commander General Hammond steps down saying he's "too old for the job," SG-1 immediately suspects foul play. And when a hard-nosed new general steps in to replace him and splits up SG-1, they vow to solve the mystery and get their beloved General Hammond back at the helm.

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4.16 "2010"

A decade in the future, Earth's alliance with a highly intelligent race of aliens has rendered SGC obsolete. But when Carter, now married to a human ambassador to the aliens, uncovers a terrifying secret about these "benevolent" beings, she must reassemble SG-1 to send an urgent message to the past.

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4.17 "Absolute Power"

When a "chosen" boy found on the planet Abydos is brought to SGC, he sends a telepathic message, causing Daniel Jackson's personality to undergo disturbing changes. Will the rest of SG-1 be able to solve the mystery of the boy's origin before Jackson becomes a power-hungry warmonger?

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4.18 "The Light"

SG-1 travels to a planet to investigate a machine that induces narcotic pleasure. But when they try to leave the planet, they are overcome with debilitating withdrawal symptoms, forcing them to stay. Can they free themselves from this addiction before it consumes them utterly?

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4.19 "Prodigy"

Carter takes a brilliant young cadet under her wing on a mission to a remote planet inhabited by unique electric beings that resemble a swarm of fireflies. But when the creatures suddenly turn aggressive, SG-1 will need the cadet's brainpower to help them escape with their lives.

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4.20 "Entity"

When SG-1 sends a probe through the Stargate, a powerful electronic impulse comes back through the wormhole and hides inside SGC's computer. But when this electronic entity suddenly jumps inside Carter's mind, SG-1 must choose between saving SGC and saving Carter's life.

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4.21 "Double Jeopardy"

SG-1 encounters a tricky situation when they join forces with androids designed to look exactly like them in a battle against an evil Goa'uld System Lord. Can they fight alongside robotic doppelgangers, or will confusion and contradiction blur the line between man and machine?

4.22 "Exodus Part 1"

SG-1 joins forces with the Tok'ra in a final attempt to rid the universe of their mutual Goa'uld nemesis, Apophis. But their plan goes awry when a beloved member of their team is captured and they find themselves at the mercy of their most powerful and feared enemy.

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