Just when he thought the cops were bad enough, Polka comes face to face with Lemmings, Shinjuku's most legendary criminal. Will Polka reveal his necromancy to save his new friends? And will his powers even be enough to save them if he does?

Keeping his promise to a ghost, Polka returns to his family's mansion with Misaki in tow. Can the necromancer fool the people who know the real Polka best? And can he save them from an unknown threat without arousing their suspicions?

The Shinoyama family is out of danger, but the Corpse God still needs to explain himself to Polka's father, Rozan! How will the gruff tycoon react to his youngest son's fate? Meanwhile, an eccentric criminal stages a jailbreak.

Polka is about to resume business as usual when he gets two unexpected houseguests: his niece Sayo and her bodyguard! Do the pair just need a place to crash, or is something more sinister at play? And Inspector Iwanome is still on Polka's track.