We rat-kin have fallen from favour somewhat recently because of the bungling of one of our Grey Sorcerers and we need to do much to regain what is lost.

The Lich King demands mortals for use as slaves and food for his forces, those who bring him those mortals will gain much credence with him and thus we plan this raid.

Take your pack in to the sewers beneath the human town of Prodigio and wait for the undead assault on the town. The assault will not be great but it should pull all the troublesome guards to the walls to repel them. That our chance, you, along with the other packs sent should emerge in to the city.

The old make poor slaves as they are weak and infirm.
The adults make poor slaves because they know what free life is like and are prepared to fight for it.
So capture their young, they can be raided in captivity to know nothing else and so will make the best slaves.

Bring us back as many human young as you can, kill all those who get in your way.