[Red Lion]

There was some kind of villian involvement, Batman's stuff got stolen, but here's HOW it all happened.

Martian Manhunter is covered with nanites that convert the outer layer of his skin into magnesium, causing him to burst into flame (fire being his greatest weakness) upon exposure to air. He later survives by wearing an airtight water-filled suit provided by Aquaman, then waiting until he can shed enough skin cells to function normally (something the trap's designer, Batman, ignored because he did not expect J'onn to survive so long).

Aquaman is rendered aquaphobic due to an altered form of the Scarecrow's fear toxin. Without water, he would die in a matter of hours. Martian Manhunter uses his telepathy to generate an illusion of him in a desert when hydrating him in a tank full of water, although he is forced to more directly help Aquaman overcome the effects of the toxin when he regains consciousness in the tank before the serum wears off.

Plastic Man is frozen solid, then shattered by a hammer by one of Ra's al Ghul' henchmen. Afterward, Flash reassembles him, allowing Plastic Man to recover.

Green Lantern is rendered blind by his own power ring from a post-hypnotic suggestion introduced during the REM phase and the ring placed on him while he was asleep. As an artist, Kyle is unable to function without his vision to guide the ring's power, but he is able to overcome the post-hypnotic suggestion after his ring is temporarily removed and the methods behind the attack are explained to him.

Thanks to a nanite injected into her ear, Wonder Woman is trapped in a virtual reality battle against an opponent whom she cannot defeat and is her equal in every way. Her refusal to surrender under any circumstance would eventually cause her heart to fail. The nanite is removed by Plastic Man after he recovers.

A specially designed "vibra-bullet" strikes Flash in the back of the neck, causing him to experience seizures at light speed before it is removed by Superman's heat vision. Although only exposed to the weapon for 22 minutes, Wally's relativistic speed makes the experience feel like months.

Superman's skin becomes transparent after exposure to Red Kryptonite, an artificial creation of Batman's made by exposing a Green Kryptonite sample to radiation developed in the event of him simply wanting to stop Superman for a while rather than actually killing him. As Superman is powered by solar energy, his skin's transparency causes a sensory overload by his internal organs' direct exposure to sunlight without his skin as a proper solar filter, to the extent that he can hear conversations on Earth while he himself is located on the moon.

Batman states that his plans were a cautionary measure that he devised after the Injustice League swapped bodies with the Justice League with the aid of the alien tyrant Agamemno years earlier (during the Silver Age event). Recognizing the dangers of villains gaining control of the heroes, he created fail-safes in case such a situation ever happened again, the event also inspiring him to create plans to stop the other heroes if they should go rogue on their own. Due to Batman's secretive actions and measures placed against the JLA, the rest of the League vote on whether or not he should remain a member. Wonder Woman, Plastic Man and Aquaman vote for expulsion as they feel that they cannot trust Batman, while Flash, Green Lantern and Martian Manhunter vote against as they recognize that Batman had a point in his reasoning for developing the plans in the first place. It is left for Superman to cast the deciding vote. As they enter the room where Batman is held, the team realizes that he already foresaw how Superman would decide and therefore had already left. Superman is not surprised by this, later saying that Batman would know how he and every other League member would vote.

And this is why he felt the need for contingency plans.

In DC's 2005 limited series Identity Crisis it is revealed that Zatanna had edited Batman's memories to prevent him from stopping the original Justice League members from lobotomizing Dr. Light after he raped Sue Dibny. Flash eventually learns what happened from Green Arrow. When Batman discovers the truth, he creates a more extreme device, the Brother I satellite surveillance system to monitor the world's superhuman population.