Adam joins a community of lost souls and discovers that they are waiting for an alien mothership to save them. Upon further investigation, he learns that the group's leader is developing a weapon that can cause mass destruction by ""canceling"" human brain wave activity. Adam must convince the young scientist working on the weapon to abandon the project before it's too late and turn his talents to aiding humanity.

To prevent a catastrophe, Adam urgently searches for mysterious objects that disappeared 30 years ago in a science lab accident. To find the objects, he befriends the Vietnam vet and his college sweetheart who survived the accident. As he tries to re-unite them, Adam finds himself in a race with time.

A radio DJ doing his annual ""War of the Worlds"" show on Halloween night witnesses the landing of an alien space craft, but no one believes him. Meanwhile, Adam knows the pilot of the unusual machine is looking for him and gets the help of two young siblings to help him avoid capture.

Things reach crisis point when Adam, his granddaughter Charlotte, Michael O'Ryan, and the FBI all converge to find Constance MacArthur, Adam's wife. While Adam is desperate to see his wife who he left in 1947, Michael O'Ryan will stop at nothing to prevent him from completing his mission on Earth and kidnaps Charlotte as bait. Meanwhile, the FBI closes in on Adam and Colonel Vise finally goes over the edge.

After his escape from the FBI, Adam must get Michael O'Ryan and his craft back to their home or Earth will be endangered. Col. Vise has other plans, forcing Adam to go back to the FBI for help.