A demoness from Hell, Veronica Iscariot, uninterested in tormenting the souls of damned sinners, ascends to the world above and finds our world full of evil and corruption. Veronica decides her mission in life is to punish the wicked and evil and goes about this with a bloody vengeance. Along the way she meets and falls in love with a doctor, Max Harris, who tends her wounds after an accident.

　　A possessed young girl from an atheist family refuses to let her new powers go and becomes more than a threat to everyone besides her.