A group of American friends decides to take a vacation in Mexico to enjoy the sun and fun. Amid laughter and drinks, they find themselves in an unexpected adventure when one of them stumbles upon a map that leads them to ancient Mayan ruins hidden in the jungle. Drawn by the promise of an exciting discovery, they venture into the dense vegetation, driven by curiosity. However, what begins as an exhilarating excursion soon turns into a real nightmare.
Upon arriving at the ruins, they realize they are not alone. A group of locals, seemingly hostile, opposes their presence and prevents them from leaving. Trapped in a place filled with mystery and unexpected dangers, the friends face not only the threat of the natives but also an ominous force that resides within the plants covering the area. As desperation grows, tensions among them rise, and hidden secrets come to light.
Over time, what seemed like just a stroll turns into a struggle for survival. Desperate to escape, they must confront their own fears and the dark reality of what they have just unleashed. As madness begins to infiltrate their group, every decision they make can mean the difference between life and death. In an atmosphere of increasing paranoia and horror, their bonds of friendship are tested like never before.