Double Jeopardy (S04E21)

SG-1 returns to Juna, formerly known as PX3-989, a planet they — or rather, robot duplicates of them — helped free from Goa'uld enslavement. Once, with SG-1's assistance, the people of Juna were able to rebel against the forces of the Goa'uld system lord Heru'ur and win their freedom. But now the natives face the vengeful system lord Cronos. SG-1 is prepared to lead the planet's inhabitants against him, but the people are not eager to trust SG-1, who had told them that they would be safe from the Goa'uld if they buried their stargate. They did as they were told — and the Goa'uld simply returned in starships. Col. Jack O'Neill and the real SG-1 team must gain the natives' confidence before they can win the battle against Cronos. Fortunately, most of the SG-1 robots have survived and might be of help on this doubly difficult mission. (Metro-Goldwyn-Mayer (MGM))