The residents of a suburban neighborhood have their lives turned upside down when a four block section of their subdivision is ripped from the earth by a mysterious force and transported to a distant planet. Thrown together in crisis, Joshua Hayward, his daughter Sarah and their neighbors try to understand what has happened to them -- why their neighborhood now ends abruptly in an invisible force-field. Sarah gains some insight when she comes across Adrielo, a horribly disfigured alien who tells her that they have been brought here by another group of aliens. Guiding Sarah through a gap in the force-field, Adrielo begs for her help in curing the disease that is turning him and his people to stone. Meanwhile, Joshua makes an even more startling discovery when he is pulled through the force-field and comes face to face with his captors, the Triunes. These big-brained, feeble-bodied creatures subject Joshua to strange and painful tests and explain without apology, that he and his neighbor