A new era for the DC Universe begins here! When a city filled with alien super beings crash lands in California, only the World's Greatest Super-Heroes can hope to contain the damage. Struggling to control their path across hundreds of miles of cities and towns, where can the combined heroes of Earth and Haven find a safe place for the space born city to stop its incredible journey?

The World’s Greatest Super-Heroes rejoin Earth’s newest champions as the dread Anathema launches her assault on Haven! Now that the heroes of the Alliance have come to think of Earth as their home, they’ll stop at nothing to defeat the woman responsible for their years of suffering. But will they pay the ultimate price in the battle that is to come?

The JLA guest-stars as the alien-born inhabitants of Haven struggle against the villains in their midst! In the aftermath of JLA/HAVEN: ARRIVAL (solicited in last month's issue of Previews), Haven's champions, beings with a diverse range of bizarre abilities, reveal the story of their city's strange exodus from its homeworld. But how will President Luthor welcome America's best-traveled immigrants?