"Redemption: Part One"
In this sixth season premiere, Jonas (Corin Nemec), unable to return to Kelowna, is eager to “finish what the missing Dr. Jackson started.” He and O’Neill (Richard Dean Anderson) are introduced to the X-302, the first human-built spacecraft capable of interstellar travel.

Meanwhile, the Stargate mysteriously malfunctions and Carter (Amanda Tapping) informs O’Neill that it could explode and destroy all life on Earth.

“Redemotion: Part One” ends with the fate of Earth in SG-1’s hands and no apparent way to avert the impending catastrophe.

"Redemption: Part Two"
Carter (Amanda Tapping) estimates that the Stargate can only withstand the attack for another 54 hours. Teal'c (Christopher Judge) and his son, Ryac, decide to seek out and destroy the weapon that has transformed the gate into a time bomb.

Meanwhile, Jonas (Corin Nemec) saves the day by devising a plan to explode the Stargate seconds after O’Neill (Richard Dean Anderson) passes through the hyperspace window. SG-1 acquires a new Stargate from the Russians, trading plans for the ill-fated X-302.

As a reward for helping save the planet, Jonas becomes a full-fledged member of SG-1.