A priest secretly leads rebels in their struggle against the corrupt military dictatorship of the Central American country of Puerto Santo.

It was a brutal murder that sent deranged psychopath Martin Kagan to prison. It was a naive deputy warden that granted him a stay of execution. Now, the police department's tactical defence instructor, John Lomax, wants revenge for his beloved sister's death.

A young couple grieving the recent death of their daughter move to the countryside where they are haunted by their tragedy and a sinister darkness.