After Antoine saves Sally's life during a raid, Sonic can't stand his bragging and zips in to see Uncle Chuck, who finds out his bug in Robotnik's HQ is malfunctioning. While Chuck goes to fix it, Sally and Bunnie, flying a Rotor created Hover Unit, find the Doomsday Machine and download its schematics, along with a Top Secret file detailing a plan to catch a spy by damaging the bug at HQ. They send back a Rocket Dove with a warning, and Antoine goes to warn Chuck. When Sonic returns to Knothole and finds out what happened, he takes off, but it's too late. Antoine has been captured by Snively, who decides to torture him with bad food preparation. Sonic rescues Antoine, but then Chuck is captured, after they uncover his hideout. Sonic rescues Chuck and demands that he return to Knothole, now that his cover is blown, but Chuck shows him his new hideout and new m. o. working in disguise.