While vacationing in Mexico, a group of friends—Jeff, his girlfriend Amy, their friend Stacy, and her boyfriend Eric—meet a German tourist named Mathias. Mathias persuades them to join him in a search for his brother Heinrich, who has gone missing while exploring an ancient Mayan ruin. Intrigued by the promise of adventure and an ancient archaeological site, the group sets off into the jungle, unaware of the horrors that await them.

Upon arriving at the secluded ruin, the group quickly finds themselves trapped by the hostile intentions of the local villagers, who force them to stay on the vine-covered temple. As they explore their surroundings in search of an escape, they soon realize the vegetation covering the ruins is not as harmless as it seems. The creeping dread sets in as the true nature of their peril becomes apparent, ensnaring them in a survival struggle against an unseen and malevolent force that lurks within the ancient structure.