After the apparent death of Dr. Robotnik, Sonic and friends part ways for two years until Knuckles is kidnapped by a mysterious organization.After the apparent death of Dr. Robotnik, Sonic and friends part ways for two years until Knuckles is kidnapped by a mysterious organization.After the apparent death of Dr. Robotnik, Sonic and friends part ways for two years until Knuckles is kidnapped by a mysterious organization.