Having arrived in a strange land thanks to the trick played on her by the Warlock, Larna finds that the realm she is in, is under the brutal rule of a strange half woman half horse creature, who has the ability to transform into any living things that she wants. The villagers in the realm live in constant fear. The young women in the villages have all been disappearing, taken by the Devil Woman, who turns them in Zombie Soldiers. She uses some of them as virgin sacrifices, so that she can retain her evil powers given to her by the God Of Evil that she worships. The Devil Woman is the arch enemy of the Silver Lady, who is the epitome of everything good. She is being held hostage in the dungeons of the Devil Woman’s lair.
When two Amazons from the tribe that had helped Larna escape from slavery in the last adventure come into the same realm, knowing that they must save the Silver Lady from the clutches of the Devil Woman, before an army of darkness strolls across the land to take over. Larna faces a whole army of walking Zombies, who are only doing what they are because of the evil spell cast on them by the devil woman. The Devil woman plays a trick on Larna, by reading her thoughts, and changing into her mother. Her real mother from Earth. Larna would not have fallen for the trick, but a strange hypnotic dust that the Devil Woman uses on men to get them to sleep with her, causes Larna to turn into her servant for a short time. The Devil Woman also lies that she has the power to send Larna back to Earth.
In the castle of the Devil Woman, Larna meets up with an old magician, who has had his powers stolen by the Devil Woman. While trying to help the magician and the Silver Lady, get out of his dungeon cell, Larna is attacked by the Devil Woman, who transforms into a fire-breathing dragon. She then turns into a Giant. Larna finds herself locked into the dungeon. The Devil Woman plans to use her for the next sacrifice. She kills one of the Amazons in a sacrificial ceremony. That only inspires the one remaining to do everything that she can to escape. It does not work like that. She gets killed while trying to escape. While in the dungeon pit of the cell, Larna finds the 3 Outcasts from the first story. They fell into the clutches of the Devil Woman when they thought that they were going to pay homage to the Silver Lady.
It is left down to Larna to figure a way to get them all out of the dungeon and to allow the Silver Lady to have her one on one encounter with the Devil Woman as it has been laid down in legend.