Stargate SG-1: Sunrise: SG1-17

Shortly after the events of season4 episode, Beneath the Surface, SG-1 find themselves on a lifeless world. They discover long-dead bodies frozen in the snow and a clue to a device promising protection from the Goa'uld forever. Following the trail they go in search of the Shield of the Gods, but all is not as it seems and SG-1 find themselves entangled with a people facing annihilation on a drowning world.