The Sentinel

The Latonans are a once-advanced race that abandoned technology to focus on mental development. Their homeworld Latona (P2A-018) is defended by a 500-year-old device called the Sentinel, which was inadvertently deactivated by rogue NID operatives seeking to reverse-engineer it. With Latona being invaded by the Goa'uld Svarog, SG-1 brings the NID agents with them to repair the Sentinel and save the Latonans from the Goa'uld.