Mardock and his friend Chewy traverse the universe and solve problems from planet to planet.

A millennium ago, the Five Monarchs guarded the land of the Xia Dynasty with magical artifacts. Later, the leader of the Dragon Clan, Zu Long, assisted humanity by establishing the Yun Chui Empire. The Empire faces the Tranquil Ocean where the Xi and Black Water Clans have defended it throughout a peaceful millennium. Now, the waves are surging from below and chaos will rise once again.

On the far side of the Milky Way, there is a planet gestating magical power-Wilhallen. There are four very different countries on this magical continent: the ancient and mysterious eastern empire—Huang; the free and open Nanyang island country—Tapaz; the iron-clad western republic—Vrsaris; and, Civilized and elegant Beilian Gang-Agnesa. All countries enshrine the High God and obtain the gift of divine power. Although there are occasional conflicts, most people enjoy a peaceful life. Until the era of 3836, when a mysterious man in black suddenly came with an unknown dark force, but found himself in the wrong place at the wrong time. Fortunately, the established fate was as recorded in the time document in his hand. Verhallen opened a new parallel world... (Source: bilibili, translated)