A thousand years from now, Vance Astro, Yondu, Martinex and Charlie-27 will rise to free the enslaved planet Earth -- as the Guardians of the Galaxy! Soon, Captain America, Doctor Strange, the Thing, the Hulk and more join the time-spanning heroes in the war to reclaim the future! Threats arise from other worlds -- as well as new allies Nikki and the uncanny Starhawk! But when Guardians and Avengers join forces in the present day, will even the combined might of two millennia be enough to stop the deranged demigod Michael Korvac? Plus: the Silver Surfer, Ms. Marvel, Spider-Man and Adam Warlock!Collecting: MARVEL SUPER-HEROES (1967) #18; MARVEL TWO-IN-ONE (1974) #4-5, #61-63 and #69; GIANT-SIZE DEFENDERS #5; DEFENDERS (1972) #26-29; MARVELPRESENTS #3-12; THOR ANNUAL #6; AVENGERS (1963) #167-168, #170-177 and #181; MS. MARVEL(1977) #23; and MARVEL TEAM-UP (1972) #86.Written by ARNOLD DRAKE, STEVE GERBER, STAN LEE, ROGER STERN, LEN WEIN, JIM SHOOTER, DAVID MICHELINIE, CHRIS CLAREMONT, MARK GRUENWALD & MOREPenciled by GENE COLAN, SAL BUSCEMA, DON HECK, AL MILGROM, JOHN BUSCEMA, GEORGE PEREZ, DAVE WENZEL, JOHN BYRNE, MIKE VOSBURG, BOB McLEOD, JERRY BINGHAM & RON WILSONCover by JOHN ROMITA