You are in the world of Sonic Adventure 2 Battle but the glitch arrived, a strange black mass glitched and corrupted with pixels of corrupted and glitched colors that is consuming everything in its path and infecting many,and you see sonic from sonic adventure 2 battle but he is not corrupted and infected by the glitch sonic from sonic adventure 2 battle:saves you before the glitch glitches and corrupts you and takes you and he goes to a safe place where the glitch is not