The Olympian Apollo visits Avengers Mansion, bringing Hercules a new costume to replace his previous garb, which was shredded in battle. Then, at the team's regular meeting, the Wasp is reinstated as chairman and the Black Knight officially rejoins the roster. The team is then summoned to the site of a South Atlantic shipwreck, where they learn of a monstrous extraterrestrial menace called Terminus. Following the mystery being's trail, they rescue the staff of a wrecked Antarctic research station and deduce that their quarry has entered the hidden primeval jungle known as the Savage Land, where, at that very moment, the giant alien menaces a party of researchers and their guide, Ka-Zar.

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