After Sasha and her friends have an eerie day at the pool, her night turns horrifying when something supernatural follows her home.

An elite military unit ventures into the South American tropical jungle on a mission to eliminate an enemy target. What begins as a tactical operation quickly turns into a nightmare when they encounter supernatural forces emerging from the depths of the jungle. Five hundred years earlier, a Spanish conquistador expedition was consumed by the same relentless force. Separated by centuries but connected by the same hostile territory, both incursions discover something hidden in the jungle: an ancient presence that cannot be controlled.