I found a description of the game setting.
http://mozztalk.com/topic/2/the-first-game-miner-kingIntroduction:
Binding mode will be used in game’s eco-system with new virtual currency. Game is designed to mining in the whole performance. Player as a miner who works in the underground finds a best way to get the most resources. Role’s ability improves by virtual currency, props, and resources. Both of them can help player get best score and have a deeper depth.
Background
In the ancient times, there was a continent called Ward with science and magic. A grand tower stood in the centre of continent. On the top of tower, a huge gem called Mozz was there. Tower was built by Antonio Crais, an ancient god, for a place to worship Mozz. It is said Mozz is the power source of Ward, which against incursion by dark side to maintain continent's balance.
In AD 793, Aksu, king came from dark side, led his men to attack Ward. The whole continent was in the shadow of fear. At the critical moment, 8 people lost their lives as Mozz to resist invasion. They gave Aksu a deadly strike and imprisoned him in dark space.
In AD 2247, human civilization was affected by darkness, corruption, distortion again. King Sollen in the east was eager to possess land, power and property. He recruited followers and hired organization who believed in dark side to rule his country outrageously. Finally, he took those all and broke the peace in continent. The whole continent was full of fear and dark. Those behaviors increased power of dark side and helped Aksu to undo his spell. Asku led his men to attack Mozz again. Mozz had a crack at that time.
Mozz become weak since it had crack. Finally, it was broken in an explosion. Its fragments were scattered every corner of the world. Some were in the forest, in the river, in the abyss, and some were taken to the dark hole by demons. There was an end-abyss in centre of continent while tower collapsed. Dark side came to continent though this abyss and continent seemed has a doomsday after explosion.
Fragments that scattered on continent were buried in the ground after several centuries. A survival came back from end-abyss with a little fragment. News was spread quickly, and the legend rose again. Since then, miners were born only for mining Mozz. It is said gem can bring people hope and power, even money. Order to own such power, best soldier was sent by all leaders in this continent for mining fragments in every corner of the world. They had to defeat others if they wanted to get gem. Then who would the winner?
This game mainly talks about two men, Bita and Lita.