The Legionnaires chase the escaped convict Dr. Eldor to the homeworld of the Proteans. They are saved from the Proteans by Unknown Boy. Who could this masked super-hero be?
The Legionnaire’s powers start malfunctioning; an emergency call is made to Superboy to see if he can help. The culprit is Urthlo, a masked adversary with the ability to turn the Legionnaire’s powers on and off with the flick of a switch.
Space raiders are stealing raw materials in order to create a super-weapon. While looking through mug shots the Legionnaires stumble upon the fact that Ultra Boy is really an escaped convict. The Legionnaires feel betrayed by one of their own!