In a remote archaeological expedition in Mexico, a group of scientists ventures into an ancient Mayan temple and uncovers a terrifying secret: a mysterious substance that may be linked to one of the deities of the pre-Columbian civilization. While examining the strange liquid, which seems to have a life of its own, they inadvertently unleash an immortal and devouring force.
One of the researchers, Dr. Max Corbeck, becomes fascinated by the substance, but soon realizes that it is far more dangerous than he ever imagined. After an accident, the amorphous mass begins to consume those who come into contact with it, transforming into a monster that threatens everyone in its path. As horror unfolds and casualties rise, the group of scientists is forced to fight for their survival while trying to find a way to stop the creature before it consumes the entire local population.
With a combination of innovative visual effects for its time and a narrative that blends science fiction with horror, the story oscillates between desperation and revelation, questioning the limits of human curiosity. The confrontation is not only against the immortal monster but also against the ghosts of greed and unchecked ambition. As night falls, the horrors of the past resurface, reminding us that there are some truths better left buried.