In a post-apocalyptic wasteland, there is a shortage of water, as it is controlled by a greedy ruler. Sheriff Rao enlists the demon king's son Beelzebub and assistant Thief to find a lost lake, braving the dangers of the desert.
EPISODE 1
The Story of the Fiend Prince: Departure
In the barren Sand Land, a human named Sheriff Rao searches for the Legendary Spring to save his people, who are dying of thirst; Fiend Prince Beelzebub and demon burglar Thief soon join him, but desert monsters and nefarious bandits await.
EPISODE 2
The Story of the Fiend Prince: The Royal Army's Secret
The trio replenish their supplies in a nearby village when they come across a King's Army tank. After taking the vehicle, a King's Army plane discovers the theft and engages in battle.
EPISODE 3
The Story of the Fiend Prince: A Man Called Legend
As Rao's tragic past is revealed, he continues to fight Zeu and the royal army. Meanwhile, General Are seeks revenge and leads his tanks into battle against the trio who stole a tank from the royal army.
EPISODE 4
The Story of the Fiend Prince: Beyond the Sandstorm
As Rao reveals the truth about the tragic explosion to General Are, the Swimmers suddenly attack. Beelzebub sets off alone to capture them and makes an incredible discovery.
EPISODE 5
The Story of the Fiend Prince: The Terrifying Insect Men
The trio vow to keep their discovery a secret. They take their tank to the royal army's water supply. There they learn the truth about the royal spring and must confront Supreme Commander Zeu and his insect men.
EPISODE 6
The Story of the Fiend Prince: The Fiend Beelzebub
A furious Beelzebub overwhelms the bug men with his diabolical powers, and Rao and Thief infiltrate the King's Army's mega-aircraft carrier to stop Zeu. Rao and Zeu clash, but Zeu is hard to defeat.
Mutsumi Tamura
Kazuhiro Yamaji
Yūichi Nagashima
Satoshi Tsuruoka
Nobuo Tobita
Toshihisa Yokoshima
Hayashi Mori
