Riddle Of The Runnaway Room! The Justice League of America has once again selected a new member: Hawkman, to join their ranks. With the Atom presenting Hawkman with this honor, Hawkman accepts the invitation and is taken to JLA headquarters and given his membership plaque as well a JLA emergency signal. After the festivities, all the JLA members leave on cases except Hawkman, Wonder Woman, Batman, Flash and Green Lantern. They are suddenly alerted to criminals, who have magical hoops which protect them from everything.
Although the crooks get away, the JLA learns that their device transports whatever passes into the crooks range 10 minutes into the future. They also learn that it works in reverse and they are able to stop the car by dumping broken glass on the road 10 minutes after they passed a certain stretch.
While the JLA returns to headquarters to try and figure out what created these weapons, we learn that it was the work of a small time crook named Joe Parry, who had stumbled upon an alien device which could grant whatever he wished. Ordering it to kill the Justice League by getting rid of their air, the device causes the JLA's meeting room to shoot up into space. Quick thinking by the Green Lantern allows for the JLA to survive the attack.
Tracking the energy source of the attack to its source, the JLA try to capture Parry, however he created a creature that's a combination of different parts of each of the JLA members he's facing (Head of Wonder Woman, wings of Hawkman, upper body of Batman, legs of the Flash and arms of Green Lantern.) While the other JLA members are knocked unconscious, Hawkman feigns being knocked out by the creatures power ring and with his anti-gravity device makes it look like the JLA are being shot into space again.
However, when the other JLA members revive, they drop on the creature crushing it to death. When Parry attempts to use the device again to defeat the JLA, they learn that the device had run out of power and is useless and Parry is quickly turned over to the police. The JLA takes the device and puts it in their trophy room.
