When three members of the Legion of Substitute Heroes commit a daring robbery, the Legion of Super-Heroes faces the possibility that the Subs may have gone bad. But as it soon becomes evident, these are evil doubles from a parallel universe. Can the Legion defeat evil counterparts of its own members? Introducing the Cabal of Super-Criminals!
Three strange visitors from outer space arrive on Earth — Lady Shrike of Thanagar, Ultragirl of Krypton, and the alien-raised human Terra-Man. But why is Lady Shrike on the run? And what vendetta does Ultragirl have against Ultraman? And what is Terra-Man’s secret?