Angel-trainee Flonne awakens Laharl, the son of the late Lord Krichevskoy, from a two-year nap by mistake. Cranky and hungry, Laharl snubs the winged nuisance and sets out to claim his place as the new overlord of the Netherworld.

Flonne is powerless without her pendant; the prince and Etna leave for the castle.

Laharl and his two new vassals get some rest in a museum full of Netherworld artifacts.

Laharl needs to find a way to eat after Etna's Prinnies go on strike.

A showdown with a demon slayer is Laharls only escape from a dungeon.

Laharl, Flonne and Etna must reveal the truth behind the attacks on the prince's life.