Yet another classic cover. Not for the last time, Superman is being filmed by an alien as a movie, in this case with Batman and Robin as guest stars. The alien throws prop monsters at the trio and films their battles against them. Only local hoods who, they alien has recruited to help out on his project decided to strike out on their own.
DC was, by this point, pretty much all sci-fi all the time. It wouldn't last and the period is reviled today by many comics fans but discerning readers have to admit there was some good stuff coming out...just far too much of it!