Kings of Darkness

... beyond the darkness and light,
Connected from the Heart, disturbed by the mind...
Feeding on emotions, souls and might...
A beauty sealed to a beast... chained to an ancient knight ...

When worlds merge... The Realm of Darkness everytime when the Sun breaths near it death, it disolves in the human world, allowing the dark creatures to rage, and feed their hunger, disobeying their King' s order. And... there is a young girl, fighting to have a normal life wearing the marks of her tragic childhood, with a secret resting on his heart - she is sealed to a Beast.

What happens when Beast King comes after her?