Epilouge from previous book

Years after green hill was restored, the stone back into it's place, Enemies become friends and the world of Mobius is at peace, especially with Longclaw!
The new descendants of Sonic and Shade, Ace and Shadow,
the Four new friends now have the care of the Green Hill stone in their hands. but Project maria suddenly turns on them. can the descendants find out how to save her... and their world? Read this sequel to Sonic defenders.