A group of scientists sailing the Caribbean are shipwrecked after entering a strange green mist in the Bermuda Triangle. They do not know the island they are stranded on but it seems past, present and future co-exist. After meeting 23rd century healer Varian and encountering 16th century privateers, the survivors begin their quest to return to their own time. But three citizens of Atlantium, a city containing the survivors of the lost continent of Atlantis, have their own plans for them.

The travelers are separated by a red cloud which leaves Liana as the "guest" of Jonathan Willaway, who is the master of a utopian community of androids, and the others trapped in a dark swamp surrounded by green skinned humanoids.