100 Million BC

Before they can complete renovations on their new country inn, a widowed father and his young daughter are visited by a strange group of tourists. He soon makes a chilling discovery: they are disaster junkies from the future who visit the past to witness history's greatest catastrophes—and his small town is their next stop.

All grown up in post-apocalyptic 2018, John Connor must lead the resistance of humans against the increasingly dominating militaristic robots. But when Marcus Wright appears, his existence confuses the mission as Connor tries to determine whether Wright has come from the future or the past -- and whether he's friend or foe.

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.

Charlie Price, a former scientist turned science fiction author, starts living one of his novels when the Federal Science Foundation's weather experiments escape control and turn disastrous.