A human, Sheriff Rao, Fiend Prince Beelzebub, and Thief, a demon, search for the Legendary Spring.

The trio steals a Royal Army tank and winds up in a battle with a Royal Army airplane.

As Rao's tragic past is revealed, the trio begins to battle General Are and his Royal Army Tanks.

When the Swimmers suddenly attack, Beelzebub gives chase and discovers something astonishing.

The trio arrive at the King's water source and the final battle with Supreme Commander Zeu begins.

An enraged Beelzebub overwhelms the Insect Men as Rao infiltrates the Army's mega aircraft carrier.

The river flows once again in Sand Land, bringing with it new encounters and a new adventure.

Upon learning of King Jam's imminent execution, the trio and their new friend rush to stop it.

King Jam's execution is imminent once again when Supreme Commander Bred and Muniel corner Beelzebub.

A hint from Lango leads the four to Demon Village where King Lucifer and Muniel square off.

Beelzebub and Ann manage to get past Bred to stop Garam, only to come face-to-face with Muniel.

The final battle, demon versus angel, comes to an end.