"The Beasts Who Thought Like Men"
A "money-plague" that has been heavily hitting people in the United States is finally subsiding. In its wake the Justice league is finding people who are becoming mindless aggressive beings, while animals are becoming highly intelligent. The Atom thinks it may have something to do with new "money-cards" that are being issued in the U.S. and goes to S.T.A.R. labs to investigate.