One hundred Mamodo go to Earth every 1,000 years to battle to be the king of the Mamodo world. Each Mamodo needs a human partner in order to use his or her spell book, a book that seals the powers of the Mamodo. When read aloud, the spells are cast by the Mamodo producing many effects. If the spell book is burned, the Mamodo is forced to return to the Mamodo world, and they lose all claim to the position of the Mamodo king. While the spells in each book typically are different for each Mamodo, there are Mamodo that share spells, like Gash Bell and his evil twin brother, Zeno Bell. The human and their Mamodo gain these spells through experience and hard work. The last Mamodo standing without their book burnt is the new Mamodo king.The story follows Kiyo Takamine, a 14-year old boy in junior high school. His father, Seitaro Takamine, discovers an unconscious child named Gash Bell while in a forest in England, and sends Zatch to live with Kiyo. Unlike the other Mamodo, Zatch lost his memory of the Mamodo world. Kiyo learns about the spell book when he reads a spell causing Zatch to fire lightning from his mouth. As Kiyo and Gash begin to encounter different Mamodos and learn more about the Mamodo battles, they discover that there are those who do not wish to fight and there are those who fight for the wrong reasons. After meeting a Mamodo named Kolulu and seeing how this kind Mamodo was forced to fight due to the power of her spells, Gash decides to become a kind king in order to stop the battle from ever happening again. As the story progresses, Gash and Kiyo meet other Mamodos that share similar views to them and become allies.
As the number of Mamodos decreases, Gash and his allies encounter a Mamodo called Zofis who takes control of several Mamodos who were sealed in stone from the previous battle to decide the king. After the battle against Zofis, the whole world is put in danger after a giant Mamodo named Faudo is brought to life by a Mamodo named Riou. Faudo is then taken over by a Mamodo that looks like Zatch, who turns out to be Gash's twin brother Zeno. Finally, when the number of Mamodos have decreased to ten, an evil and powerful Mamodo named Clear Note appears.
After many sacrifices, Clear Note is defeated leaving Gash and Brago the remaining Mamodos. After Kiyo's graduation ceremony, Gash and Brago battle and gash is crowned the Mamodo King. Three weeks later, a letter is sent from the Mamodos to their human partners. Gash's letter reveals that all is well in the Mamodo world.
Watch Gash Bell! as it premieres this Sunday on ABS-CBN!
