Sonic X - Project Shadow v.8

Who or what is Shadow the Hedgehog? Dr. Eggman discovers the secret lab of Professor Gerald, his grandfather. By freeing the sleeping Shadow creature, Eggman uncovers Gerald's plan to destroy the world! Because Shadow is on the loose, Sonic is blamed for Shadow's criminal activity and is sent to Prison Island. Will Sonic be freed in time to stop Eggman's evil plan? Where will Shadow's loyalty ultimately lay, with his creator's grandson or with our hero, Sonic?