Sylvanas had already defeated Varimathras and his minions, and forcibly recruited the dreadlord as her lieutenant, with the aid of the forces of Blackthorn, Mug'thol, Snarlmane, and the Murloc Puddle Lord. However, Detheroc and Balnazzar remained a threat for her plans. With the information provided to her by Varimathras, Sylvanas took her forces to the Western Plaguelands, were Detheroc had set camp, protected not only the Undead under his control, but also by Garithos and his resistance, all of which had fallen under Detheroc's mind control.
Sylvanas possessed two footmen and made them ask to open the gates of Detheroc's base, a necromancer opened them and seconds later Sylvanas, her forces and the footmen killed the necromancer and his soldiers.
Sylvanas Windrunner: "You've done well, Varimathras. You've led us straight to Detheroc's stronghold. But tell me, who are those humans?"
Varimathras: "Detheroc used his telepathy to enslave a top-ranking human warlord. I believe his name was Garabon or Gilithos or something. Human names all sound the same to me.Instead of stamping it out, Detheroc has taken control of the last pocket of human resistance. They maintain their own army within the keep."
Sylvanas Windrunner: "You're brother is more clever than I thought. His defenses are considerable."
Varimathras: "Yes. And with this paltry force you've mustered, a direct assault on the walls would be suicide."
Sylvanas Windrunner: "We can attack either of the two bases with impunity, but it's only a matter of time before the other is alerted to our presence."
Varimathras: "We must hurry. Time is running out!"
Varimathras: "We're out of time! Both bases have been alerted to our presence. We've got to bolster our defenses before they launch their counterattack!"
Sylvanas Windrunner: "Detheroc will send his forces soon. We must be ready!"
Detheroc: "Traitor! How could you betray us like this? We could have ruled this land together!"
Varimathras: "Sylvanas has greater strength than you know, brother. I'll take my chances with her."
Sylvanas Windrunner: "The humans' destruction gives me a certain amount of satisfaction. But Detheroc is the true threat here. It's not over till he lies dead at my feet."
Sylvanas Windrunner: "We have a common enemy. The last dreadlord, Balnazzar, currently controls the capital city of your kingdom. If you help me kill him, I'll see to it that you get your lands back."
Grand Marshal Garithos: "Why should we trust you? You're part of the Scourge that drove us out in the first place!"