A Dark Matter (2013)

Angus and Laura love each other deeply...but Laura is holding a deep dark secret. When she leaves him inexplicably, Angus slips into a foreboding realm, where the Demon of Nothingness reigns supreme. After Laura's exit, Angus questions his role in her disappearance and sets out to uncover the truth. Working his way through a cunning gallery of underworld figures, Angus slowly unlocks Laura's secret while discovering sinister truths about himself. With nothing but his own Demon to guide him, Angus ventures across dimensions and states of reality to find Laura and win her back.