The Flash of Earth-One encounters Doctor Alchemy once again, only to discover that his old foe is terrified by another menace! Meanwhile, the Flash of Earth-Two fights a strange alien being who mimics the powers of both the Fiddler and the Icicle! These strange encounters cause the Flashes to seek out help from the Green Lanterns of two worlds! With all clues pointing to the involvement of the Crime Champions, these two sets of heroes risk all to learn the meaning of the Hounds of Limbo!
Flash faces his greatest crisis ever, the fact that he’s dying once more! Worse off, he can’t up and quit like he did before with enemies stalking him and the friends and family of Barry Allen at every turn!