When Captain Glenn Edwards's plane crashes in the enigmatic Amarok Crater, the government declares him lost. Determined to uncover the truth, Glenn's fiancée, Samantha, gathers an unlikely group to investigate. They find a landscape populated by strange creatures warped by radiation from a meteor. But nothing prepares them for Triclops, a 50-foot tall, three-eyed giant who dominates this isolated world. Samantha is convinced Triclops is Glenn, horribly transformed. Her feelings may be misplaced, however, when the creature chooses her as his next meal.