The Killer Machines: The IBN computer research facility creates Romac, the most advanced computer the world has ever known. When tested, Romac turns on his IBN creators and tries to destroy the Super Friends by turning the Justice League Computer and the Supermobile against them. Batman, Robin, and Black Vulcan have to shut Romac down before he can do any more damage. Garden of Doom: A scientific experiment accidentally turns plants into monsters. Revenge of Bizarro: Bizarro takes revenge on the JLA by turning the members into his "Super Bizarro slaves" and exposing Superman to red kryptonite. The red kryptonite's horrible effects cause Superman to grow extra arms and legs. Now Superman's only chance to stop Bizarro and return to normal is blue kryptonite, which affects only Bizarros adversely .