It's the Squadron Sinister vs. the Frightful Four for control over the "Combat" Domain of Battleworld. Which group of villains will be the ones to take out the Howling Commandos, the Leatherneck Raiders, and the Deadly Dozen? And what's up with that Starbrand army?

It's all-out war between the New Universe heroes of Nutopia and the Squadron Sinister! But are the Sinisters a greater danger to themselves? And which Sinister is going to die?