The Death Eaters are rallying; the Aurors are scrambling. The Wizarding war is approaching its peak and the death toll grows day by day. Voldemort is gaining influence and accumulating followers every week: powerful purebloods, selfish cowards, anyone willing to add to his numbers and aid in his noble cause. Those who publicly stand against him usually end up dead and those who fear him live in shambles.
However, there is one man more powerful than Voldemort, one wizard whom even the Dark Lord himself would hesitate to stand up against: Albus Dumbledore. Despite the darkness of the Wizarding world, those students who will be returning to Hogwarts in September will be safe and protected, somewhat sheltered from the evils of the world. But not for long.
The game starts out as canon Marauder Era, but will gradually begin to take on an AU course after the game has been going for several weeks, when students from the future use the ancient vicis tempus spell to arrive in the past. It doesn't take long to make the visitors realize the future as they know it is long gone... if they even still have a future.