Before this vast story of danger, adventure, love, struggle, and general excitement begins, it is necessary to provide something of an explanation.
First of all, Voldemort might have been the darkest dark wizard Europe had seen in a long time, but frankly, he never turned his evil eye to the Americas; the reason could be he simply didn't have the time to try and conquer two continents (even if he was immortal, Voldemort was still human). And even if that educated guess was not the reason, Americans weren't about to complain.
Secondly, and possibly more importantly, the magical American population and the European population did not interact as much as their muggle counterparts. It wasn't that they disliked each other, but simply that the two cultures had grown apart so much that it was just harder to try and meld together again. It was due, mostly, to the fact that there were few relatives that bridged the gap; those wizards and witches that came across during colonial times had stayed there, and those that stayed in England never bothered to leave. Communications were few and far between, leaving a large gap of information.
Consequently, the Americas saw the rise of their own dark wizard, one who could have given Voldemort a run for his money. The only difference, and a big one at that, was that Morgono (a name he derived from his very ancient descendent Morgan le Fey; but alas, we diverge) did not use Horcruxes to stay alive for eighty years, but a potion of his own devising, something similar to the famed Fountain of Youth. Also, he did not differ between muggles and wizards as Voldemort had (muggles being the dust of the earth). Morgono simply saw anyone who opposed him as his enemy, and since muggles were generally not aware of the magical world, he only killed them when he found a lull of resistance among witches and wizards, and so hardly affected the muggle world at all.
His time overlapped Voldemort significantly, but it must be noted that his powerful reign of chaos exceeded Voldemort by about twenty four years, due partly to going into hiding for sixteen of those years (probably to stew some more potion, which is suspected to be exceedingly difficult to make). When he came again, he was more powerful than ever, and with a right hand man at that.
This new wizard was called Castor. Those who survived his attacks reported he came from Europe somewhere, for his accent was not American. He towered over his shorter master by at least five inches, with swarthy skin and menacing black eyes. Many feared he was sure overpower Morgono, only to create an even more terrible reign.
The first five years after they returned where a frightening time, but soon they were challenged by a hero, something of the American version of Harry Potter, Abram Forth. Having lost both parents to Morgono at the age of eleven, he determined to become the best wizard possible to defeat them, and at the age of thirty, succeeded...in a manner of speaking. All that the magical population knew for sure was that Castor had been seriously wounded, and Morgono had disappeared somewhere, assumed dead. It was a good assumption since he was not heard from for at least two years.
Which now brings us to our story.