Deep in the Brazilian rain forest, a team of Navy SEALs has been nearly wiped out by something sinister and superhuman, sending shock waves through the Agency for Covert Rare Operatives (ACRO). Now ACRO agents Sela Kahne and Marlena West head to the world’s most unforgiving jungle to find and kill a mythical monstrosity with a taste for human blood. But to succeed in their mission, they will need the help of two men, each hiding his own dark secret.