In the file room of a U.S. government base, an air force captain is forced to shoot and kill an airman who pulls a gun on him. The airman glows and disintegrates. Meanwhile, David Vincent is in Maine, trying to find a fisherman who is in possession of an alien disk. After his bizarre experience, Captain Mitchell Ross wants David to testify with him before a committee. But David knows that talk will do no good: he needs that alien disk. Later, the aliens abduct David and take him on a trip into their space ship. Incredibly, they want to convince him that they have only peaceful intentions. To prove it, they show him how they've revived and replenished a dying desert valley. But all is not what it seems.