The deaths of Cronus and Apophis at the hands of SG-1 created a power vacuum in the Goa'uld Empire that the remaining System Lords attempted to exploit. After several months of fighting amongst themselves, the System Lords had all suffered heavy losses and expended an enormous amount of resources but declared a truce and set a meeting of the High Council of System Lords. The Tok'ra Ren'al arrived at Stargate Command and proposed that Dr. Daniel Jackson go undercover as the Lo'taur of Yu-huang Shang Ti using the Reol chemical and assassinate all the Goa'uld in attendance with the Symbiote poison the Tok'ra had created. SG-1 agreed and traveled to Revanna with SG-17. After a briefing, Jackson and Jacob Carter/Selmak took a Tel'tak to P3X-042. (SG1: "Summit")