Slayer

Colonel Jessica Weaver instructs Captain Hawk Hawkins and his platoon to return to the rain forest to finish the job they started six months ago. Grieves is sent ahead to scout and gauge the vampire threat. Weaver also reveals that Laurie Williams, Hawk's ex-wife and a university entomologist, is on a field expedition in the same vicinity and must be kept safe.

Laurie and her guide encounter a local boy threatening a man with a wooden stake. Laurie pretends to be an ignorant tourist to distract the boy while the man escapes. Javier Vasquez explains that the boy is from a nearby village and that the grandmother’s death has locals convinced vampires roam the area, inviting Laurie to stay at his Agua Caliente hotel.

While Hawk’s team rests, Grieves and his squad are ambushed by vampires in a village bar. The vampires capture Grieves and escort him to their nest, where Guillermo reveals that Grieves has already been bitten and will soon turn. Grieves fights back but succumbs, drinking the blood of one of his own men, signaling a grim new danger for the platoon.

During a night vigil, Hawk wakes to a vampiric figure outside his tent and shoots, but the party is soon overwhelmed by several vampires. The skirmish costs the lives of several soldiers, convincing Hawk that safe land travel is unlikely. They decide to rent a fishing boat to move toward Agua Caliente, hoping the river offers protection.

On the river, the crew stops at trading posts along the way and uncovers clues that vampires are growing more organized. A dogtag from Grieves’ squad surfaces as a souvenir, hinting at his fate. They witness villages disposing of bloody dead into the river and learn the vampires now use firearms, signaling a broader threat. A collision with a submerged obstacle reveals Reyes, one of Grieves’ men, who has become a vampire.

Laurie arrives at the Hotel Agua Caliente, where Javier warns her to beware of the forest vampires. He explains the legend of a fountain of youth that granted immortality but required blood. That night, Estrella attacks Laurie in her room, and Javier escorts her to the vampires’ cave to keep her safe.

The vampires, led by Grieves, assault Hawk and his men as they lay low near Agua Caliente. Hawk is badly wounded in the melee, and Alex begins trailing the nest to plan an ambush. Weaver coordinates efforts from a distance, pressing for a decisive strike.

On the river, the party learns that a coordinated group of vampires—including soldiers—attacked a sugar plantation, killing many workers. Reyes, formerly with Grieves’ squad, has become a vampire and now serves as a key member of the nest. The threat level has clearly escalated from isolated attacks to organized assault.

Inside the vampire cave, Javier reveals his true identity as a conquistador from Queen Isabella I’s court, brought into this world to convert natives who were themselves converted. He and Estrella explain the vampires’ figure—once driven by legend, now emboldened by the humans’ destruction of the forest. Laurie’s presence ties the human and vampire plots together as the confrontation escalates.

Hawk refuses Javier’s offer to join the new order and battles him as Javier shifts into a giant bat. Estrella duels Laurie while Hawk fights Javier, and Laurie defeats Estrella with a stake. A falling stalactite impales Javier, Hawk decapitates him, and Grieves dies after Hawk delivers a final fatal strike.

As the dust settles, Colonel Weaver and Alex reveal that they were waiting outside the entire time. Weaver explains that Hawk chose to prioritize saving Laurie over immediate extraction, a decision that underlines his character. Laurie and Hawk share a kiss as they exit the cave together with the others.

With the immediate threat eliminated, Hawk and Laurie emerge into the daylight, their relationship reaffirmed by the peril they faced together. Weaver and Alex prepare for a possible debrief, while the remaining vampires are defeated or driven off. The team looks ahead, hopeful for a safer future in the jungle.