When the ordinary citizen Jack DeVries (Chris Mulkey) heists many banks and kills many people, the whole police department chases him under the command of detective Tom Beck (Michael Nouri). They capture him and seriously wounded, he is sent to the hospital, sharing a room with Jonathan Miller (William Boyett), a man with serious gastritis. The FBI agent Lloyd Gallagher (Kyle MacLachlan) comes to the police station looking for DeVries and is assigned to join Tom. When they arrive in the hospital, DeVries is dead and Jonathan is missing. This is the beginning of the hunting for a mysterious and bloody alien.

The transfer of the alien from DeVries into Jonathan Miller was accomplished by stop-motion photography. During the stops, stage hands would work at stuffing the creature model into the mock head. Actor William Boyett, upon seeing the alien going into "his" mouth, was so disgusted he refused to watch and actually left the room.

Tom Beck:
Doesn't anyone say please any more?


Lloyd Gallagher:
Please.


Tom Beck:
How can I refuse?


Lloyd Gallagher:
You can't.

Continuity: State of the broken windshield during the chase of the "uzi woman."

Performed by The Truth