The Story: "Takeover of the Earth-Masters!" by Elliot S! Maggin, Dick Dillin, and Frank McLaughlin. Up in the JLA satellite, Aquaman(who is on Monitor Duty) and Hawkman are sharing stories, Hawkman bemoaning that, without his wife Shayera, he really has nowhere to go on Earth.
This conversation is interrupted when they get a distress signal from Central City. Aquaman thinks Flash can handle the situation on his own, but Hawkman insists on getting the JLA involved.
Flash is fighting some weird pink blobby creatures and as he's telling the JLA of this, it(they?) zap him! Superman, Aquaman, and Red Tornado find themselves fighting the thing to a standstill, while Black Canary takes the Flash to the satellite for help.
The creatures seems to adapt and evolve to fighting the JLA, and they zap the heroes long enough for them to escape.
Flash tells the JLAers of some work a local scientist has been doing, and how he contacted a space alien who created the creatures, which he calls Adaptoids. The JLA then disperses all over the globe to fight the creatures, but they defeat the JLAers by converting energy back at them, breaking Black Canary's leg, turning Aquaman into a mer-man, etc.
Hawkman, who was left behind to coordinate with other JLAers, is nowhere to be found. He leaves a note saying he had to go back to Thanagar, which the JLA takes as an act of cowardice:
...oh great, and we just changed the JLA Mail Room header back!
Roll Call: Superman, Aquaman, Flash, Hawkman, Black Canary, Red Tornado
Notable Moments: Elliot S! Maggin's second issue in a row, and his plots are dense and, frankly, hard to summarize. I apologize if some of these issues don't sound like they make a lot of sense.
Aquaman has been playing a much larger role in the JLA as usual, no doubt due to The Super Friends being a big hit on TV.