Episodes 5-8 of the anime series based on the hit video game 'Disgaea: Hour of Darkness'. The King of the Netherworld has died, and various demons are now building their own empires in an effort to take control. However, the late King's son has arrived to reclaim his rightful place as ruler of the Netherworld. Along to help him is his vassal Etna with her Prinny squad and Flonne, an angel-in-training originally sent to assassinate the king, only to find that he has already died. Episodes are: 'The Dungeon of Attraction... Maybe', 'Etna's Embarrassing Secret', 'Netherworld's Sibling' and 'The Prinnies' Longest Day'.