The Man vs. Nature conflict reaches epic levels when The Sentry must face the towering Mauling Menace known as Ursus the Ultrabear! Also- why are all the other heroes suddenly avoiding the Sentry? For all his powers, the Sentry now finds himself helpless, faced off against a wall of silence and lurking menace, standing alone until he can uncover the deadly clues leading to the secret of Area B! Plus, the atomic menace of the Super-Collider! All this in one full-color issue! Be there!