Speculative fiction is a broad umbrella category of narrative fiction referring to any fiction story that includes elements, settings and characters whose features are created out of imagination and speculation rather than based on attested reality and everyday life. That encompasses the genres of science fiction, fantasy, science fantasy, horror, alternative history, and magic realism.
The King of Darkness is filled with mixed bloods that push him for more.
He is on the rampage, fulfilling an ancient curse feared by every
citizen. But, four mean to stop him and all will risk their lives to
enter his lair.