The Man of Steel meets the Man of Madness as two of comics' most unique and revolutionary heroes cross over (and how!). In each of their respective universes, Superman and Madman are involved in scientific experiments, the results of which propel the unsuspecting superbeings into one another's worlds. The only thing is, each takes half of the other with him -- creating two confused heroes and one big Hullabaloo! Co-published with DC Comics.