Iron Man, Thor, Giant-Man, The Wasp, Captain America, The Sub-Mariner, Rick Jones, The Teen Brigade, Atlanteans, a D'Bari, Bucky Barnes (Cameo, in flashback), The Hulk (Cameo, in flashback).
Namor attacks a group of eskimos and throws their idol into the sea. When the ice melts, the figure trapped within turns out to be Captain America, in suspended animation since the end of World War II. The Avengers rescue Cap and return to New York. An alien figure turns our heroes to stone. When Cap and Rick Jones track him down, the alien agrees to restore the Avengers if they agree to help him recover his broken space ship in return. When doing so, the Avengers are attacked by Namor and his people. The restored spaceship ultimately drives off Namor and his men.