In Shattered Crystal, Sonic and his pals are dealing with some ancient evil. Long ago the Ancients lived in harmony with nature, but one of their number needed a mechanical suit to function. This chap, Lyric, became obsessed with the destruction of all ancient life and so the Ancients were forced to trap him in a statue. Such measures have a tend to fall apart in the world of videogames, however, and Sonic and his team accidentally free Lyric while fighting Doctor Eggman. Now he's kidnapped Amy as part of a scheme to get his hands on the Lost Crystal of Power and it's up to Sonic, Tails, Knuckles and newcomer Sticks to rescue her!
