In SKYHILL: Black Mist you awake inside a huge interconnected buildings conglomerate, a condominium built by Skyhill Inc. an omnipotent corporation that literally controls entire city. You being one of its employees were granted an luxurious apartment and just moved in. What was supposed to be a beginning of a new life, unexpectedly changed into a nightmare.
Things have gone terribly wrong your daughter was kidnapped and whole building is suddenly overrun by some dark monsters and mad people that want to hunt you down like an animal. AIt must be this mysterious black mist that changes human into vile creatures that is standing behind this events.