Lost

During the time of a massive flood all magical beings fled through a portal. Some of mankind was allowed to travel with them as they chose to leave our world behind. The portal brought them to an untouched world with tall mountains and lush foliage. They started a new life and over the centuries mankind took control over the land. Magic and order are thrown out of control and they go to war killing all magical beings. After the war a plague of monsters roam the land and we're brought to near extinction. Until one day the future ruler of the kingdom is born with a secret. The hoards of monsters are diminished but their plans still in motion. The princess Leah doesn't fear them or anything, until a man not from her world arrives.