One of the worst storms - thunder, lightning, and rain - ever to strike London, arrived the same day the visionaries have predicted the end of the world. Could this be a harbinger of the arrival of an unseen comet that will destroy Earth? Has the apocalyptic day arrived? A beautiful maiden visiting the home of a doctor and his family believe so to the extent she is rendered catatonic. While in this state, her mind sees things unseen by mortal man.