3D Dot Game Heroes takes place in the peaceful Kingdom of Dotnia, a world not unlike a 2D 16-bit era sprite-based RPG.
Once upon a time, there was a small 2D land called Dotnia Kingdom. The people there led peaceful lives, protected by the mysterious six orbs and the six sages who guarded them. But one day, the Dark King, Onyx, set his gaze on the power of the orbs. He captured the sages and stole the orbs.
Foul monsters began to roam the lands, threatening the towns. The kingdom fell into chaos... But just as the people to lose hope, a noble hero arrived. His sacred sword in hand, he rescued the six sages and reclaimed the six orbs.
He challenged Onyx, and with the power of his sword and the orbs, sealed the Dark King inside a Dark Orb. Thus, the young hero was praised as the savior of the kingdom, and his bravery became a legend passed down by the citizens of Dotnia.
But over the years, the tale of the hero's brave deeds faded into myth. The abundant number of travelers who visited from afar began to dwindle as the story faded. Now, once a prosperous kingdom, Dotnia lost it's luster.
Where did everyone go? Why did they lose interest in Dotnia? This called for an investigation! King Tezro, current king of Dotnia, launched a wide-spread quest for answers.
The investigation concluded, and the answer was simple: Nobody was interested in Dotnia's 2D charm any longer. The King was shaken by this realization. And so, he addressed the people with a bold declaration:
"This is an age of 3D!"
The king's new plans ignited the Kingdom. Reform began, and the 2D land was given a dramatic new 3D look.
Dotnia started to regain it's liveliness once again. But just as people began to adjust to this new way of life, an incident occurred...
Someone stole the Dark Orb that sealed the Dark King!
Once again, evil creatures besieged the kingdom. The people had no means of repelling the monsters and could only pray for salvation...
...and for the emergence of a young hero, just like the one who had saved the kingdom a long time ago.