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.

The FBI finally catches up to Adam and takes him to a federal prison for questioning. Meanwhile, Col. Vise experiences flashbacks of the experience that started his alien obsession. As they try to capture Adam, Michael O'Ryan discloses himself to Vise as his long lost friend.

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.