*Based on Sonic the Hedgehog 3 & Knuckles* After the events of "Sonic the Hedgehog 2", Dr. Robotnik has discovered the mysterious floating island known as Angel Island. There, he meets Knuckles the Echidna, guardian of the sacred Master Emerald. He tricks Knuckles into thinking that Sonic and his friends are trying to steal the Master Emerald. Meanwhile, Sonic and company get to Angel Island. But when they get there the encounter Knuckles, who beats Sonic in a fight. Sonic and the others are trying to explore Angel Island, but Knuckles is following them. He is always there waiting to strike. But they learn that they need to team up for the good of Angel Island and all of Mobius when Dr. Robotnik steals the Master Emerald to power a giant robot. Sonic and Knuckles face off against Robotnik and defeat him.
