The future's greatest heroes meet the mightiest heroes of the present day! The Guardians of the Galaxy and the Avengers join forces, but will even the combined might of two millennia be enough to stop the deranged demigod Michael Korvac? Then, the Guardians' adventures in the 20th century continue as they team up with Ms. Marvel, Spider-Man, the Thing and Adam Warlock; encounter the High Evolutionary; and meet the enigmatic Her! But when the team comes face to face with Vance Astro's younger self, will they accidentally change their own past - and annihilate their timeline? Collecting THOR ANNUAL #6; AVENGERS (1963) #167-168, #170-177 and #181; MS. MARVEL (1977) #23; MARVEL TEAM-UP (1972) #86; and MARVEL TWO-IN-ONE (1974) #61-63 and #69.