In the Pride Ring of Hell, a bizarre phenomenon is causing panic among the denizens: sinners are mysteriously disappearing, and the population of Hell is dwindling. The once-bustling inferno is starting to feel eerily empty. The seven deadly sins—Lust, Gluttony, Greed, Sloth, Wrath, Envy, and Pride—are inexplicably concerned. After all, without sinners, what's the point of Hell?
Determined to uncover the truth, the sins band together in a reluctant alliance, each bringing their unique (and often conflicting) traits to the investigation. Their journey through the underworld's various rings and realms reveals a web of deception and a surprising adversary behind the disappearances. Along the way, they encounter eccentric demons, absurd challenges, and situations that test their very natures.