The great demon Dante, taking advantage of a boy's vulnerability to his demonic influence in dreams, is awakened from a thousand years of sleep. This being, a survivor of an ancient and forgotten civilization, intends to wipe out the entire human race. However, nothing is so simple: the demon's motivations are not as wicked as one might think, and they intertwine with the boy's life, which teeters between nightmare and madness. Meanwhile, the satanist fights against the church hierarchy to obtain justice, which, as one might guess, is that of the demon Maou. This series lacked an ending until its remake in 2002. Nagai took many ideas from Maou Dante for Devilman.