Adventure comedy sequel featuring the computer game character Sonic the Hedgehog (voice of Ben Schwartz). Sonic and Tails (Colleen O'Shaughnessey) team up to defeat Dr. Robotnik (Jim Carrey) and Knuckles (Idris Elba) as both sides search for an emerald that has the power to destroy the world. Can Sonic and Tails find the jewel before it's too late?