He is supposed to tell you to go to some ruin (I think it's dead mand respit) and collect a book called King Olaff's book. It is SW of Morthall on the other side of the mountian.
If he didn't tell you to go there you could try going anyway, sometimes the dumb AI can be tricked. If not you could be humped. However the BC is a joke and most of their fetch quest items just get stuck in inventory.