Takamine Kiyomaro, a depressed don't-care-about-the-world guy, was suddenly given a little demon named Gash Bell to take care of. Little does he know that Gash is embroiled into an intense fight to see who is the ruler of the demon world. All of the demons have to pick a master on Earth and duke it out with other demons until one survives. Needless to say, Kiyomaro becomes Gash's master, and through their many battles, Kiyomaro learns the importance of friendship and courage.

During the Summer holidays, Gash and gang decide to head for Fuji Mountain for a picnic gathering. There, they encounter a girl with a white magical book. Her name is Kotoha and her book has a message saying that Gash's mother is located a cave in the forest. However, when they eventually found the cave, there was already a blond-haired youth by the name of Wiseman. In order to rescue Wiseman, Gash and the others attempt to proceed into the depths of the cave and stumble upon the entrance to another world. Soon later, the strongest warrior, the Black Knight, appeared before them. Thinking that Gash was the one who stole the 101th magical book, the Black Knight started to attack them. Gash and Kiyomaro have to find the real criminal in exactly 24 hours, or else they will be stuck in the alternative world forever.

Folgore - 00F, the world's most ultimate spy is set on retrieving the stolen boobs. Watch as many of the characters from the original series (Konjiki no Gash Bell) are given life anew in this alternate setting.

With only Coast School in mind, Takamine Kiyomaro leaves Gash bewildered that he’ll make a new Volcan 300 for him to play with. The genius tries to catch up with the bus that would take him there, but a giant Volcan 300 kidnaps him. Meanwhile Gash befriends the same Vulcan that kidnapped Kiyomaro later named: Volcan 300 Generation 4. The genius wakes up to see that he isn’t in Coast School, but that a doctor by the name M2 wants him to be his partner in the future. However, Gash and the other demons interfere with M2's plan in taking Kiyomaro to the future by the help of Generation 4 who agreed to take Gash there by a glitch in its system. Still the doctor tries to get Kiyomaro to come back with him, but with the help of everyone, he is defeated. Though a new situation is at hand, the time warp that M2 came from is out of control. It’s up to Gash and the others to save the city or be sucked into it.

[Source: Anime News Network]

An old acquaintance of Gash's has kidnapped Umagon in revenge for his arrest. Can Gash rescue Umagon?