When a Pod lands in Knothole, Sonic and Sally realise the Doomsday Machine is already in operation. The Freedom Fighter groups break into the Doomsday Machine, only to find Robotnik let them in. Sonic tries to destroy the control room but is thwarted and almost roboti-sized, then escapes using multiple Power Rings. Uncle Chuck suggests they use the Power Stones to overcome Robotnik and, with Nicole's help,, Sonic finds Robotnik's Power Stone and he and Sally sneak back inside the Doomsday Machine, where they decide to combine them as an immeasurable power source. As they streak through the Machine, Robotnik realises it's all over and jumps into an escape pod, while Snively escapes via a hidden elevator. But as the incredible energy source vaporizes the Machine, it overtakes Robotnik's pod. That night, as the Freedom Fighters celebrate their supreme victory over Robotnik, Snively, now on his own, decides it's his turn to rule.
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