Sonic is a foolhardy hedgehog who grew up without a family. Serial Designation N is a defective disassembly drone with more brains than brawn. After stumbling upon a weapon that can destroy entire planets, they join forces with a team of do-gooders known as the Galactic Rangers led by Raphael. Together, they must stop the evil Sloan Walker and Starscream from utilizing this dangerous technology. Along the way, Sonic and N learn valuable lessons about heroism, friendship, and discovering one's own identity.