《Stargate:Continuum》是《Stargate: SG-1》的大结局,主要讲述Ba'al通过时间旅行回到过去,妄想阻止星际之门项目的诞生,而SG1则必须设法恢复历史的本来面目,并与Ba'al进行最终的对抗...When the Stargate team goes to see Ba'al, the last of the System Lords, being extracted from his host. All of a sudden, Tealc, Vala and all of their allies start to vanish. Later Carter, Daniel, and Mitchell try to escape through the Stargate but find themselves not on earth but on a ship trapped beneath the polar ice cap. They learn they are on the freighter that was delivering the Stargate found in Egypt in 1939 to America. The ship is about to sink and they evacuate. They are picked up by a submarine and brought to a Naval Base where they learn the SG project never happened. They try to warn the government that the Gouald might attack earth. But the government doesn't believe and tells them that they're being released and given new identities and not to talk to each other or about their previous alternate timeline . One year later, the Gouald attack and the government asks for their help.