It appeared out of nowhere, a dark cloud drifting slowly on the winds across the lands, spreading across the world without pause. Once these clouds of darkness loomed over the land it drove humans and animals caught inside to madness, it also manifested terrifying creatures from the earth. The Taint has managed to blanket the entire planet in darkness but one island remains, which is now where the last of humanity is residing. 
Over the years we have trained warriors and magicians to drive off the creatures arisen from the Taint should it ever find a way to infect the island. From past experience it has been documented to take around two years until the effects of the Taint peak.