The League must stop an alien weapon that destroys a planet by consuming its material to grow until it uses it all.
Did You Know?
The Atom is told, "Save it for the autopsy", when his character had just, in the comics, been deemed responsible by Batman for a killing while Dr. Mid-Nite, shown in scene just before this, gave an autopsy as apparent evidence. See more
When Green Arrow and Crimson Avenger are attacking the aliens by the Javelin, Green Arrow's quiver is yellow instead of green. See more
[a general has just taken away a doomsday machine that nearly destroyed Earth
Amazing. Show him a weapon that destroyed its creators and every other thing it saw, and he wants to play with it. What's to stop history from repeating itself here on Earth?
References The War of the Worlds