“Things need not have happened to be true. Tales and dreams are the shadow-truths that will endure when mere facts are dust and ashes, and forgot.”
~ Neil Gaiman, Dream Country

Since the departure of the Tuatha De Dannan the crown passed from Seelie to Unseelie in accordance with powerful oaths. War and ruin was the result each time the cycle was broken. Winter has reigned for more than twenty years. Much of what was is now lost, and what the future holds is unknown. Through sacrifice and courage the Kithain have turned back the clock of seasons. Where once bare branches and snow existed, Autumn leaves fall again. 

But the Kithain are divided, their oldest enemies have escaped their bonds and again touch the Autumn world. Old alliances must be reforged and the way forward found before the Elder Dark falls upon the world and nightmares rule once more.