Spy Hog by Ben Hurst. A Sonic SatAM Synopsis by Mark Briggs.
On the assembly line in a factory of the smooth, dark city of Robotropolis, Chuck conducts maintenance on equipment. He soon leaves his post to the command booth right on an upper level. Snively notices the worker bot Chuck leave his post.
In the command room, Chuck downloads information on a top secret project. Snively enters the room forcing Chuck to deactivate the screen stating he fixed a tripped circuit breaker.
Back at Chuck's hideout in a trash heap somewhere in Robotropolis, Sonic brings Chuck a chilidog on a run to obtain reports on Robotnik's activities. Meanwhile, Robotnik informs Snively about the fuel tanker disembarking at dawn. Chuck listens to that from a bug spy.
Sally, Bunnie, and Antoine use magnovests to attach to bottom of the oil tanker. Sally's vest malfunctions forcing Antoine to hold her up as she reconnects the wires. Sally's vest works again as Sonic diverts the Swat bot forces from the tanker.
Robotnik sees through the diversion by ordering his forces back to the tanker to find its fuel full of water. He deduces a spy in the midst from this and three other successful attacks in four weeks by the FF's.
In Knothole, Sally kisses Antoine in front of Sonic for saving her. Sonic thinks it's icky as Sally is summoned by Rotor to a surprise.
In Robotropolis, Robotnik puts a mouth mask or tongue torques on himself and Snively to hide their voices from unauthorized electronic surveillance. Snively conducts an electronic scan of the main command center to discover Robotnik's own buy spy in a vent. Robotnik disables it making the spy come to fix it.
Back in Knothole, Rotor shows Sally a hover unit he found in the Great Swamp and restored along with a security box allowing them to bypass Robotnik's codes. Rotor also invents a larger drop note pigeon.
Sally uses Nicole to decode information from the box on Doomsday also finding Robotnik is onto Chuck's bug. Rotor wants to warn Chuck to be pushed aside by Antoine leaving on Dulcy for Robotropolis instead.
Dulcy hides as Antoine searches the vent of the bug. Swatbot patrols are heard forcing Antoine into the vent. He crawls though to fall down a vent into Snively's lair from being startled by Chuck also trying to find the spy bug.
Antoine is tied to the chair while Snively looks up information on him finding he was trained as a squire in a French colony somewhere. Chuck summons Sonic to rescue Antoine who'll give away Knothole.
Antoine nearly cracks because Snively is poised to use margarine instead of butter on various French cuisines. Sonic brings Antoine to Dulcy to fly him back to Knothole before heading for Chuck again fearing it's too dangerous to remain in the hideout.
A signal bot pin points Chucks signals and raises the alarm. Swat bots crash through the junk pile apprehending Chuck. In the main chamber, Robotnik has hooked Chuck into a machine to reprogram him to reveal Knothole's location.
Sonic bursts into the chamber in time causing a great whirlwind blowing around the Swat bots. Robotnik has to retreat in his mechanical chair as Sonic rescues his uncle.
Sonic really insists on his uncle's return but he has a new hideout. Chuck enters a room by opening a concealed door. Soon, a maintenance bot like R2 comes out. Sonic, Sally, and Bunnie are in shock only to be relieved by the sight of Chuck popping open from the robots top hatch. "Next week Doomsday"