There is a vast difference between the Light and Dark realms, or as they're more commonly known as the Light and Night Worlds. While the Light World is inhabited by humans and animals alike, the Night World was kept for the forsaken creatures that shun the very name of nature.
Never once has either the Light or Dark realms had an issue with keeping their worlds apart, until one day when the Vampire prince Merritt catches a human who happens to stumble across their boarders. While attempting to return the boy Merritt is shot down by his own guards, forcing both him, and Alister into the portal.
How will they ever escape with his life? With the whole Kingdom of vampires after them for their prince, and the FBI after Alister for information, they must seek out those who know where the portal is hidden before this causes utter destruction for both realms...