The MacManus brothers are living a quiet life in Ireland with their father, but when they learn that their beloved priest has been killed by mob forces, they go back to Boston to bring justice to those responsible and avenge the priest.

During an archaeological expedition on Bouvetøya Island in Antarctica, a team of archaeologists and other scientists find themselves caught up in a battle between the two legends. Soon, the team realize that only one species can win.

"A man confesses to an FBI agent his family's story of how his religious fanatic father's visions led to a series of murders to destroy supposed """"demons."""""