Dragon Quest is loosely based on Dragon Quest III. The names and some of the characters are familar, but the world map is smaller and a very different shape. The two main characters are Abel and Tialah. Tialah receives the legendary Red Stone from the Aliahan Village sage Master Yogi. Soon after, Tialah is kidnapped by the evil Baramos who wants to use the Red Stone to resurrect The Great Dragon and be granted eternal life. Abel swore to rescue Tialah and he is given the Blue Stone, which can only seal the Dragon once it has been released. (Source: AniDB)

A next fierce fight is about to begin after Katta Kirifuda finally become the Duel Masters National Tournament champion. Japan's largest theme park, Duel Masters Land has appeared. With numerous fun attractions and events, Katta was also having fun. However, after meeting the mascot of the park, Duemouse, Katta got involved in a ridiculous conspiracy of the park. A shadow that invades the Duel Masters World, which is the mysterious team of duelists! The mysterious identity of the legendary card is to be revealed. A new stage and revolution of Duel Masters befalls Katta! (Source: Duel Masters Wikia)

Shu is from Datania, a country that makes young children work. He and his friends were trying to escape when they met the Returners. The Returners are some kind of rebels to Datania. Shu goes with the Returners to fight Zero, Nines, and his men who are after DT, a special substance inside humans. (Source: ANN)