In rural Bethnal Green, Lizzie Brown takes pity on a couple of drunks and gives them a free palm reading. However, she is horrified when she has a vision of one of the pair meeting a great danger in a graveyard at midnight. She sees a huge black hound with flashing eyes mauling him. Lizzie and the Penny Gaff Gang track down the dog, who belongs to a ruthless team of professional grave robbers. It's up to the gang to expose their vile trade before they strike again.