Heads or Tails - Sonic reluctantly takes Tails with him to the Big City to find some cotter pins for the Freedom Fighters catapults. While in the City, Sonic is nearly eaten alive by his old dog Muttski, now robotisized guard dog in the Junk Heaps. After a harrowing chase, Sonic and Tails return to Knothole and reveal Robotnik's plan to the other Freedom Fighters. They come up with a daring plan to stop Robotnik's defoliating scheme that involves Sonic's speed and the catapults. Sonic's Nightmare - When Sally uncovers Robotnik's plan to seed the cloud with toxic rain, they attempt a daring mission to sabotage the craft being transported by land vehicles. Mission fails when Sally, Bunnie and Antoine are captured and taken to an oil refinery island in the Great River. It's up to Sonic to not only sabotage Robotnik's cloud-seeding, but rescue his friends as the island literally sinks beneath their feet. Sub-Sonic Robotnik - severely upsets the ecosystem above and below the surface. After being swept into an underground world by a whirlpool, Sonic, Sally, Antoine and robot discover a strange creature who claims he is the last of a people who have been destroyed by surface creatures and blames the Freedom Fighters for his plight. Sonic Past Cool - Tails brings a new friend home to Knothole - a baby Terra-Pod who has strayed from the herd, which is currently migrating. Things get dicey when the herd decides to head into the mysterious unchartered Great Jungle, where few who have entered ever returned. Sonic foils Robotnik's attempts to capture Baby-T's mother, rescues all the Freedom Fighters and terra-pods from an imprisoning force field and survives the dangerous plant life of the Great Jungle.