Frank Martin can't believe his eyes when his son Danny brings home a beautiful new girlfriend from college. The girl, Jade, is a dead ringer for a woman Frank rescued from a top-secret military experiment when he was a private in the army 20 years earlier. Of course, she can't be the same woman. Or can she? The Martins' world is turned upside down as Frank's past catches up with him and they gain a deeper understanding of Jade's timeless beauty.

It is 2055 and the post-apocalyptic world is populated exclusively by women; all the men were killed in the Great War and the Scourge that followed. Into this matriarchy comes Major Jason Mercer (David Keith), who was cryogenically frozen forty years earlier and now awakened in Lithia. Lithia is a small agricultural enclave overseen by a group of women that include the regal elder Hera (Julie Harris), Ariel (Claire Rankin), Miranda (Nadia Capone) and Pele (Kirsten Williamson). Mercer's arrival sparks a debate about the nature of men among some women and revives long-dormant sexual feelings in others. The debate intensifies as Mercer, seeing the enclave's poverty and primitive tools, begins to repair the community's broken machines and pushes Miranda, the group's trade representative to barter with Hyacinth, a neighboring community, for electricity to run the machines. Over the objections of the elders, Mercer gets the machines running.

For 30 years there has been a fragile truce between the Free Alliance and the Coalition of Middle-Eastern and Pacific States, both on Earth and on Mars. Both groups mine triradium, a super-powerful radioactive mineral that can be used for both power and illegally for weapons. When a giant explosion appears to consume the Earth and sends a giant shock-wave towards Mars, the soldiers at the Free Alliance base on the Red Planet wonder if the truce has come to an end. Cut off from Earth for 12 hours as Mars rotates, Colonel Samantha Elliot (Barbara Eve Harris) believes someone from the Coalition has been smuggling triradium. With communications temporarily out of order and a Coalition drone approaching the Alliance base, Elliot prepares to launch a preemptive strike. Major James Bowen (Adam Baldwin), who has grown fond of Major Dara Talif (Joan Chen), the Coalition liaison officer at the base, disagrees with Elliot.

Mona Bailey (Jane Adams) lives with her husband Ned (Peter Outerbridge) in the Clackson Arms, an old apartment building that is being taken over, apartment by apartment, by a mysterious developer called KM Inc. Mona is a hypochondriac, an able-bodied woman who rides a wheelchair, who treats the Physician's Desk Reference like a personal bible and who has not left the building in six months for fear of catching a disease. One day she backs her wheelchair into an electrical box and gets a shock, leaving her hearing strange voices and seeing bodies dropping out of windows...

It is 2056, six years after the Hing, a humanoid race, invaded Earth. While America fights on, Russia has reached an uneasy truce with the aliens, leaving some regions under their control and others declared neutral. In the neutral city of Archangel on the Barents Sea, cynical American expatriate Michael Ryan (Nathan Fillion) runs Heaven, a small coffee bar and music club, where shady Russians mingle with Hing soldiers and other dubious characters.

Gideon Banks lost his wife Liz and son Simon in a horrific car accident some twenty years ago. At the time of the accident he was involved in something called the Neural Archiving Project - NAP for short. The technology was developed to create smart computers - transferring human engrams to computers. The company eventually gave up on the technology, but Gideon didn't. After years of quietly perfecting it, he built a small robot, from parts he stole from Concorde Robotics, where he now works. Zoe, Gideon's niece, discovers Gideon's secret, the robot contains actual neural engrams from the real Simon. She becomes worried not only about Gideon but also about the robot that sounds and acts a lot like her little cousin used to.