"The Sub-Mariner has joined the Avengers! And they'll need his superhuman strength and aquatic expertise when they make a shocking discovery beneath the waves of Jamaica Bay, deal with a new Yellowjacket, and clash with the inimaginable cosmic power of the Beyonder! But when the Avengers' time-hopping nemesis Kang the Conqueror returns - a whole Council of Kangs in fact - can Earth's Mightiest Heroes escape the deadly realm of Limbo, dispatch the threats of the Space Phantom and Growing Man, and triumph over their futuristic foe? and what parts will Ravonna and Immortus play in the battle? Plus: The Avengers and West Coast Avengers team up to uncover a traitor in their midst! Guest-starring the Molecule Man, the Silver Surfer, and Freedom Force!" -- P. [4] of cover.

"Contains material originally published in magazine form as Avengers #262-269 and Annual #15, and West Coast Avengers Annual #1"--Tp verso.