Time Travel Fantasy Epic

After experimenting with dark matter, Dr. Benny Aitken inadvertently opened a portal into another dimension. He found himself in a world called Rapto, a place where he was given magic powers and killing stuff made him stronger. A dark mage guild soon discovered the portal and found a way to get through it. Dr. Benny Aitken, self-proclaimed genius, had unwittingly visited a fantasy apocalypse upon earth. It's starting point? A small town called Pasture Downs.

In medieval Europe, three explorers from the distant future begin an ambitious project: to build a craft capable of reaching the stars. While their leader oversees the construction of a secret underground base in Iceland, the other two travel thousands of miles to negotiate with the rulers of Europe and recruit the most brilliant minds of the age. When the Iceland base comes under attack, the travelers try to return to defend their home, but they are trapped in Paris just as an army of 20,000 Vikings lays siege to the city.