Alden Walker—sport pilot and skydiver—finds himself and his light airplane mysteriously transported into an alien world: a parallel Earth peopled by exotic-looking humans as well as a host of animals that have evolved into human-like form, with human-like powers of thought, but which have retained their appetites for flesh and blood. Especially human flesh and blood.

Accompanied by a beautiful indigenous woman with a score of her own to settle, Walker must set out upon a covert mission to retrieve a vital element from the creatures who have stolen it, employing his piloting and parachuting skills in combination with her superb swordsmanship.

On their quest they will encounter a host of anthropomorphic predators, until they finally reach their goal: a mountain fortress occupied by a coldly calculating race of humanoid vampire bats. And upon the success or failure of their mission hangs the fate of both their worlds.

Alden Walker—sport pilot and skydiver—finds himself and his light airplane mysteriously transported into an alien world: a parallel Earth peopled by exotic-looking humans as well as a host of animals that have evolved into human-like form, with human-like powers of thought, but which have retained their appetites for flesh and blood. Especially human flesh and blood.

Accompanied by a beautiful indigenous woman with a score of her own to settle, Walker must set out upon a covert mission to retrieve a vital element from the creatures who have stolen it, employing his piloting and parachuting skills in combination with her superb swordsmanship.

On their quest they will encounter a host of anthropomorphic predators, until they finally reach their goal: a mountain fortress occupied by a coldly calculating race of humanoid vampire bats. And upon the success or failure of their mission hangs the fate of both their worlds.