Guinea Pig Part 4: Devil Doctor Woman

Masked thugs torture an innocent woman in increasingly brutal ways.

A woman kidnapped in the dead of night awakens in a grisly dungeon, where her deranged assailant prepares her body for a morbid ritual.

Hideshi, a bored salaryman with no friends, would love nothing more than to die. But when his suicide attempt doesn’t take, he settles for terrorizing a judgmental coworker with his newfound immortality.

An artist dealing with the grief of his wife leaving him finds solace in painting the squalor of the sewer. He discovers a trapped mermaid, whom he brings home to heal. Her condition worsens, and she asks the artist to paint her before she dies.

A dwarf scientist has his dreams frustrated when his sister becomes seriously ill. Determined to find a way to preserve the essence of his sister after the death, the scientist begins to use humans as guinea pigs in a bizarre experiment.