From the introduction:
[I] had imagined a possibility of framing an interesting, and perhaps not an unedifying, tale out of the incidents of the life of a doomed individual, whose efforts at good and virtuous conduct were to be for ever disappointed by the intervention, as it were, of some malevolent being, and who was at last to come off victorious from the fearful struggle. In short, something was meditated upon a plan resembling the imaginative tale of Sintram and his Companions, by Mons. le Baron de la Motte Fouque, although, if it then existed, the author had not seen it.
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