 The SGC-base is approached by an al-kesh glider which lets itself be taken down, so they can capture Ba al, who offers to exchange the necessary information to find Merlin s weapon for human help to eliminate his clones, which want to kill him. They mistrust his story, as does NIS-agent Malcolm Barrett, who however fails to take over the investigation. Since the captive might actually be a clone, several missions to different planets retrieve and capture all clones, but which is the real Ba al, and what are his true intentions?