A group of visitors arrive at a vast, secluded mansion, owned by a professor who has recently discovered cryptic Etruscan artifacts and an ancient burial ground nearby. Intent on sharing his findings, the professor invites his friends and their families for a weekend of leisure and discovery. Among the guests are a variety of individuals including a mother and her unnervingly peculiar son, couples, and the professor's research associates. The serene setting quickly sets the stage for exploration and relaxation.

However, their tranquil retreat is abruptly interrupted when the professor's tampering with the burial ground awakens a horde of flesh-hungry undead. These reanimated corpses, clad in decayed fragments of their ancient burial wraps, begin to besiege the mansion, trapping the guests. As night falls, the survivors are forced to defend themselves against the relentless onslaught of these ancient entities. Their fight for survival becomes increasingly desperate as they face not only the physical terror of their assailants but the psychological horror of betrayal and the unraveling of human sanity under the stress of unrelenting fear.