Heroes of Warcraft: Dark Portal

After the main force of the Horde was wiped out by the Alliance, the Burning Legion forced the orcs to open the Dark Portal again and invade Azeroth from Draenor. The orc shaman Ner'zhul took this opportunity to steal the Skull of Gul'dan, the Book of Medivh, the Eye of Dalaran, and the Scepter of Sargeras from Azeroth. Thereby tearing apart space rifts and escaping to other worlds in the universe. At the same time, after the Alliance discovered that the artifact was stolen, they came to Draenor with the intention of regaining it. However, their actions alarmed the Burning Legion, and they were eventually discovered. After a desperate struggle, Draenor was blown up, and the whereabouts of the Alliance forces were unknown.