Mystical old solicitor Mr. Blunden gos to Mrs. Allen and also her young children in their squalid, tiny Camden Town flat and also makes her a deal she can not decline. The family members end up being the housemaids to a run-down country mansion in the charge of the lawyers. Eventually the children satisfy the spirits of 2 various other kids who passed away in the mansion nearly a hundred years prior. The youngsters prepare a magic potion that permits them to travel backwards in time to the era of the ghost youngsters. Will the youngsters be able to aid their brand-new good friends as well as what will happen to them if they do?