The succubi Angelisia and Gwenothin Lynx are known across Hell as the disgraced servants of the Demon Lubick, Third of the Seven, and the Sin of Lust. But, instead of suffering for their crimes the pair now serves as the lieutenants of Mira Sinborn's Underhorde. Nobody knows why the couple has gone unpunished - or even what they did to offend a member of the Seven - so when a mysterious assassin sets fire to their favorite café during the duo's anniversary breakfast, whispers abound that the attack may not have come from one of the Sinborn's rival Overlords, but from a far more nefarious source. Now Angi and Gwen race to find their would-be assassin before they can strike again, all while trying to salvage their torched celebration.