Jenniferan Australian girl on the run in the back, joins a coach-load of tourists to a trip of the old windmills of Holland, turns up in Amsterdam and, in a desperate attempt to blend in. She and the other tourists are made to seek refuge in a disused shed beside a menacing windmill by which a devil-worshiping miller once ground the bones of both locals instead of grain when the bus breaks down in the middle of nowhere. Jennifer learns they all have some thing in common -- even a secret that seems to mark them all as members of the group begin to evaporate.