I didn't hear the Undead story, but it was in wide screen format and the camera moved through the Undead starter town while a lower voice explained how the Undead broke off from the Scourge.

我没有听过不死族的故事。但它是这样的：在宽屏格式下，镜头移动并穿过不死族的起始城镇，同时会有一个低沉的声音介绍不死族如何同亡灵天灾失去了联系。

youdao

His exploits against the Scourge became legendary; he could go into battle against legions of the undead, Ashbringer held high, and emerge unscathed - leaving only ashes in his wake.

他抵抗天灾的事迹成为了一个传奇，他敢于走进与亡灵大军的混战中，高举灰烬使者，却不会受一点伤——在他身后留下的只有灰烬。

youdao

So, in summary, currently the Naga, Burning Legion, and Undead Scourge pose very real threats to Azeroth still, the mortal races simply don't realize it yet.

因此概括地说，目前那加、燃烧军团、还有亡灵天灾依然对艾泽拉斯造成非常实际的威胁，凡间种族却还未意识到这一点。

youdao

So, in summary, currently the Naga, Burning Legion, and Undead Scourge pose very real threats to Azeroth still, the mortal races simply don't realize it yet.

因此概括地说，目前那加、燃烧军团、还有亡灵天灾依然对艾泽拉斯造成非常实际的威胁，凡间种族却还未意识到这一点。

youdao