An obsessed scientist conducts profane experiments in evolution, eventually establishing himself as the self-styled demigod to a race of mutated, half-human abominations.

A circus’ beautiful trapeze artist agrees to marry the leader of side-show performers, but his deformed friends discover she is only marrying him for his inheritance.

Convicted of manslaughter for a drunken driving accident, Kent Marlowe is sent to prison, where he meets vicious incarcerated figures who are planning an escape from the brutal conditions.