Des Elfenkönigs Zaubermacht

From the back of the book (translated):
From beyond the mountains the orc hordes invade the realm. Murdering and marauding they advance, almost unstoppable. But an old handwriting says that such a danger already once threatened and at that time could be stopped by the united armies of humans and elves...
Your task is to advance through the numerous enemies to the elves and to remind their king of the old oaths. But only too well you know that the eleven-king is shrouded in legend and mystery, and no one ever saw his court - a far way of full dangers and secrets lies ahead of you!