Touchstone

S2 E14: When a group posing as the SG-1 team steals the climate-controlling Touchstone from the planet Madrona the planet's weather deteriorates threatening 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 make a disturbing discovery: the secon Stargate on Earth which had been officially decommissioned was reactivated by high level orders and used to steal the Touchstone. Now the weather device is on Earth and being used to manipulate the world's climate. When Gen. Hammond discovers the whereabouts of the second Stargate the SG-1 team races to it determined to find the Touchstone before all of Madrona perishes and to discover the hidden agenda behind the Touchstone's theft.