A death metal band is on its last legs after a disastrous European tour and is about to be dropped by their label. Hiring a legendary producer from the Norwegian black metal scene, the band sets out to record their latest album in a remote farmhouse outfitted with top-of-the-line gear. Ivan, the lead guitarist, plans to record The Devil’s Concerto, a piece of music he brought back from Europe that – according to myth – drives audiences mad. What the band didn’t expect was that the myth was true, and they must now survive the curse that’s been unleashed.
