------------------------------------------------------------------------------------------------------------------------------------------------------------ Sonic Adventure DX help menu Sonic Adventure DX codes Overview Centuries ago, a water-like guardian bestowed upon the planet seven Chaos Emeralds. These emeralds were a source of absolute power. However, absolute power corrupts absolutely — and it did not take long before wars broke out over who would control the Chaos Emeralds' seemingly unlimited power. A tribe of echidna ancestors of Knuckles responded by creating a singular Master Emerald, which held powers that could control and neutralize the Chaos Emeralds. With the Master Emerald came a guardian spirit. It was said that a rival tribe of echidnas angered the guardian by attempting to steal the Chaos Emeralds and ruining the sanctuary it was protecting. They were all but completely destroyed within a single night and the guardian was never seen again. What was believed to be the guardian was then named Chaos, the God of Destruction, lending its name to the Chaos Emeralds. In the present day, Dr. Eggman learns of the legend surrounding Chaos. Believing it to be true, he seeks out the Master Emerald and shatters it, freeing Chaos in the process. Eggman's goal is to control Chaos, and use its destructive powers to collect the Chaos Emeralds and conquer the city. To help him, he has created the E-Series robots. When Sonic learns of Eggman's plans, he and his friends spring in to action to stop Eggman and they start another journey for the Chaos Emeralds.