An old and no less experienced and talented magician, sorcerer and alchemist, Professor Longlough Drum was the first to discover the properties of the mysterious meum - a substance that is the fabric of the universe, being itself in all its manifestations - and outlined the secrets of the mysterious substance in his treatise. Meum gives power over matter - almost limitless, divine possibilities, the one in whose hands Meum is himself God and Creator. But the elves of Twilight Watch found out about Dram’s developments - power-hungry creatures, embittered towards the whole world, ready to do anything to gain power. Longlough's task is to prevent the secrets of the meum from falling into the hands of the villain. Even at the cost of his own life. Fortunately, there is always a faithful assistant at hand...