Conquest of Northrend:

Vengeance Landing

The Hand of Vengeance is the group of Forsaken forces that have been sent to Northrend by Sylvanas Windrunner to bring Undercity's vengeance upon the Lich King. Their method is the delivery of the latest strain of their deadly Plague. Since Sylvanas' rise to power, the Royal Apothecary Society in the Undercity have been developing a "New Plague" intended to wipe out the Undead Scourge. After several years of research, the Forsaken are now ready to unleash their ultimate weapon against Arthas' forces.