In the year 1000 cosmic calendar of the Kario Yuga era, the planet R, attended by two satellites, is an Earth which enjoys an abundance of majestic nature and a shining blue ocean.

It's existence is maintained by four Crystals which control the four basic elements of the universe: Earth, Water, Fire and Wind.

Once upon a time, when this planet was menaced by a dark entity and faced its biggest crisis the most courageous ones desperately fought to protect the crystals in a battle since long forgotten, but...

While being imprisoned by the pirates on Rouge Island, Prettz, Linaly and Valkus encountered a ghost boy from 200 years ago who appeared from the Crystal of the Wind and told them about Deathgyunos and their attempt to conquer the universe. Having already won the Crystals of Earth, Water and Fire the enemy attacked them on Rouge Island to try and take the Crystal of the Wind. With Prettz's effort, they barely escaped the crisis and the pirates' Rouge Island dissipated into the ocean...

From a confession made by Mid, grandson of the legendary and courageous Cid, the true identity of the plunderer of the Crystals is revealed. Prettz, Linaly, Rouge and Valkus have been asked by Queen Lenna to recover the Crystals of Earth, Water and Fire. With the help of the Flying Dragon, guardian god of Tycoon kingdom, they were determined to venture into the Evil headquarters: The Black Moon. But just as they were about to begin their journey, the enemy made a surprise attack and kidnapped Linaly in whose body the Crystal of Wind temporarily resides...