Avengers by Kurt Busiek and George Pérez Omnibus Vol. 2

The Avengers forge an uneasy alliance with the Thunderbolts to face Count Nefaria - but the true threat comes from the stars as Earth is declared a cosmic maximum-security prison for alien criminals! To save their planet, and to contend with hordes of rampaging Hulks and the spawn of Ultron, the Avengers must rebuild their operation bigger and better than ever. But when the time-spanning Kang the Conqueror wages war on the present day - and wins - Captain America and a small band of rebels may be the world's only hope for freedom!