Six years ago, Sonic left his home, his kingdom, and his family behind to stop Robotnik from taking over the world. Everyone knows that story. But what happens when his past begins to catch up with him? There was more to the prophecy than what you have heard. There is a fourth voice, who was lost long ago, and it is time for him to be found. The royal children shall soon be reunited, and Robotnik's days of terror will be numbered... [First installment of the Underground Royals Saga]

Sonic never told Shadow, Tails, and his friends about his life about Sonic Underground, or the fact he was a prince, searching for his mother. When Dr. Rototnik threatens Mobius, he knew that he has to reunite with his siblings and help them find their mother, Queen Aleena along with his friends, making the Prophecy coming true.

Sonic lived with his friends and fought Eggman. Everything was going great until they showed up. Two other hedgehogs claiming to be his siblings. ~I dont own the cover~