A single, impossible sound from the depths of the Indonesian jungle is biologist Lena Accardi’s last hope. With her funding cut and her career on the line, she agrees to lead a privately-funded expedition into the unmapped rainforests of Java. Her a volatile mix of thrill-seeking social media stars and seasoned professionals with nothing left to lose.
They believe their cutting-edge technology and survival gear will protect them. They are wrong.
The jungle itself is a relentless enemy, a green hell of suffocating humidity and treacherous terrain. But as they push deeper into the heart of the island, they discover they are not alone. Something ancient and intelligent watches from the canopy. Something that has hunted this valley for centuries.
When their camp is vandalized with terrifying precision and members of the team begin to disappear, the expedition descends into a desperate struggle for survival against a creature that defies science and reason. Trapped between a raging river and a predator that owns the night, their only goal is to make it out of the jungle alive.