Soldier Heath drowns while deserting his unit's fight on a beachhead. He returns to life, but is marked by the devil. The ghosts of his comrades catch up with him and drag him to hell, where he belongs.
"High in the mountains of Mexico, in 1938, two young tourists completed a day's exploration..." When the men get too tired to find their way back to the village, they are saved by a boy on a donkey leading the way. They learn that the boy was killed in an accident seven years ago.
A mother and daughter travel to Czechoslovakia, where the daughter is to meet her future husband, count Falco Lupercalia. The count and his father are both vampires, who can also transform into werewolves. Mad fighting ensues. The mother manages to stab the vampires. The price for the victory: She goes mad!
An exploration team awakenes the soul of Ashmedah, cruel priestess of Baal. She takes over the body of girl explorer Wanda and starts sacrificing humans again. The undead Wanda overcomes her evil nemesis. Both die in flames.