The murders of four missionary women bring Helena, a detective, to the deep jungle; years earlier, Yua and Ushe are tasked with protecting the jungle.

Meeting resistance from locals, Helena sets out on her own to investigate; she is haunted by Ushe, one of Yua's proteges, who has also been murdered.

Helena connects the dots from the murders to her tortured personal story; almost 50 years prior, Yua's tribe battled Joseph's men.

While visiting a powerful smuggler in the heart of the jungle, Helena discovers that he has unexpected connections to her family and a surprise prisoner.

A local cop is willing to help Helena bring the prisoner back to town; a flashback examines Helena's birth and mission.

The prisoner escapes, sparking a frantic search; Joseph and his men plot to learn the secrets of the jungle.