The Northern Mountains are all that separate the three villages containing human life from the dangerous and forgotten territories. A place with hidden monsters and unknown enemies. All are forbidden to go there. Only one had been lost to the terrors that hide in the uncharted lands until the day when an accident leaves three teenagers trapped in the caves of the mountains. They know their only chance to survive is to travel deeper into the caves in hopes to emerge on the other side of the mountains. Soon, what starts out as an attempt to keep alive turns into a journey to discover a power beyond explanation and defeat their enemy, a man who is more than just a hidden foe, but their troubles do not end there.