Touchstone (S02E14)

A group posing as the SG-1 team steals the climate-controlling Touchstone from the planet Madrona. The planet's weather deteriorates, threatening its inhabitants with imminent death unless the stone is recovered. Madrona's high priest, Roham, and his granddaughter, Princess La-Moor, blame the SG-1 team for the theft. The SG-1 team investigates and makes a disturbing discovery: The second stargate on Earth, which had been officially decommissioned, was reactivated by high-level orders and used to steal the Touchstone. The weather device is on Earth and is being used to manipulate the world's climate. Gen. Hammond discovers the whereabouts of the second stargate. SG-1 races to it, determined to find the Touchstone before all of Madrona perishes — and to discover the hidden agenda behind the Touchstone's theft. (Metro-Goldwyn-Mayer (MGM))