I can't stand being dead! Gehenna (hell), the world where sinners go after death… In its deepest part, the notorious metal band, "SPREE★KILLER", favored by the king of hell, Mephisto, they keep increasing their infamy. However, one day, led by the young guitarist, Alex, the band make their way to Chaos (the surface). To get revenge against the world that rejects them… The melody of insanity played by these miserable dead men, is now, resonating across this world…