Wanted -- The Capsule Master! Reporting to a call to halt a jail break, Green Arrow and Speedy are shocked to find that the escaped convicts were wearing masks and under false identities, and surmise they could have broken out of jail at any time. Later they answer a call to the museum where a meteor is stolen. Examining a x-ray photo of the meteor shows that there is some sort of mechanical object within it. Believing that aliens from outer space are involved, Green Arrow calls in help from his fellow JLA member the Martian Manhunter. The two end up trying to stop the three convicts (really aliens) and their master, Vulcor the Capsule Master from retrieving a third object from the bottom of the harbor, but fail in doing so.
Traveling to Mars to see what he can learn about Vulcor, Martian Manhunter learns that Vulcor was a prisoner on Mars, imprisoned for trying to use a weapon against the people there, but he recently escaped. Returning to Earth, the Martian Manhunter, Green Arrow and Speedy all work togeather to try and stop the Capsule Master from retrieving parts of the doomsday device he plans on using against both Earth and Mars. Their first attempt fails when Vulcor uses hypnotic powers on Green Arrow, making him shoot flaming arrows at the Martian Manhunter.
Later, the two decide to throw off Vulcor by having Martian Manhunter disguise himself as Green Arrow, and Green Arrow as Martian Manhunter. Their ruse works when they make their final attack on Vulcors capsule, and when expecting to battle Green Arrow, Vulcor has to deal with the Manhunter instead who defeats him and takes him and his men to Mars for punishment.
