In the mysterious realm, whispers began to spread about an unsettling phenomenon known as Nightmare Portals. These dark gateways emerged from the darkest corners of the world, revealing eerie, twisted dimensions that seemed to be plucked from the worst nightmares of the inhabitants. 

Legends tell of ancient sorcery gone awry, resulting in the creation of these portals. Scholars speculate that a forgotten order of mages attempted to harness the power of dreams and nightmares, seeking to bend them to their will. However, their ambition led to disastrous consequences, as the veil between reality and the dream realm was torn asunder, allowing the malevolent forces of the nightmare to seep through.