In the Stargate SG-1 Season 2 episode " The Tok'ra, Part 1 ", the SG-1 team travels to a desert planet and navigates complex negotiations with the Tok'ra, a resistance group of symbiotes opposing the Goa'uld, in an effort to forge a crucial alliance. While negotiating with the suspicious Tok'ra, Captain Carter struggles with memories of a former symbiote, leading to a desperate attempt to save her terminally ill father, Jacob, by offering him as a host for a dying Tok'ra leader. The episode concludes with the Tok'ra base being compromised by the Goa'uld, leaving the potential for an alliance and the fate of Jacob Carter uncertain. "Stargate SG-1" The Tok'ra: Part 1 (TV Episode 1998) - IMDb