Meanwhile In Echinaopolis, the Dark Legion are attacking Knuckles and Julie-Su. Knuckles unable to glide in Sonic's body uses his speed and finds the Freedom Fighters crashed plane. Sonic, Knuckles, Julie-Su and the Freedom Fighters take down the robots and some members of the Dark Legion, but they are stopped by holographic projections of Dr. Robotnik and Dimitri. Dr. Robotnik commands that either Sonic and Knuckles surrender themselves to them, or Sonic and Knuckles will forever be stuck in each other's bodies. Dr. Robotnik and Dimitri teleport them to their base and show them their 'Chaos Cannon', in which they need the Master Emerald and will blast the Great Forest with them, destroying them. Sonic and Knuckles head to the Master Emerald shrine making it look like they're about to steal it, but destroy the spying device and bring Dr. Robotnik and Dimtri the Master Emerald (fake). The cannon is destroyed by the sabotage and Sonic and Knuckles are restored to their own bodies from touching the Master Emerald and destroy the villains plans. Knuckles destroys Dr. Robotnik who was a robot double (this issue is before Sonic the Hedgehog Issue 75 and after Sonic the Hedgehog Issue 50) and Dimitri flees.
Sonic and Knuckles get into an intense argument about who is cooler; Hedgehogs or Echidnas.
While Sonic is calmly fishing, Sallactor appears hoping for Sonic's help. Sonic thinking that the version of Sally is good, is warned by Zonic the Zone Cop. Zonic summons Sallactor's mortal enemies to take care of her; Sonicaman: Chaos Ninja Team. When the battle is over and they are returned to their zones, Sonic wants to know how Zonic keeps track of everything. Zonic gets a warning from another zone about a very dangerous threat and asks Sonic for his help. Sonic is teleported there and sees Overlanders fleeing from Rabbot-Zilla. Zonic reports to Sonic that good and evil is changed through zones and disappears. Sonic traps Rabbot-Zilla in tar, saving the city. Dr. J. Kintobor the Dr. Robotnik of the zone tells Sonic that he used a Chaos Emerald that mutated the wildlife. The mutated Mobians split the Emerald in half and it remains in the monster's lair. Dr. J. Kintobor builds Sonic a giant robot to retrieve the Emerald, which is run by Sonic's speed. Sonic flies to Knothole Island but is confronted by mutated versions of Sally, Tails, Knuckles, Amy and Rotor. Sonic can't take fighting his friends, but finds his version from the world. His version is actually Jules and has half of the Chaos Emerald stuck on his chest. Sonic can't fight his dad, but accidentally kills him by pulling the Chaos Emerald out of his chest. Sonic flies away and the mutated Sonic of the zone finds his dad dead.
Sonic is teleported back to Mobius by Zonic, and Zonic reveals that he is Sonic from the No Zone.
J. F. Gabrie meets Zonic and offers to show him around the office. However, Zonic tells Gabrie that he is only there to use the bathroom and while he does so, Gabrie refuses to think of how Zonic would accomplish it, due to him standing sideways.
"Turnabout Heroes" is shown sideways in a reader's perspective.
This issue is where we first see Zonic clearly with his helmet off.