Sonic + Alvin and the Chipmunks: Island Battle

Sonic and friends meet Alvin, Simon, Theodore and the Chipettes in the first epic crossover between two popular franchises. When the world has been torn asunder by what appears to be a bug in a computer system from another world, Mobius' fastest hero, Sonic the Hedgehog must team up with rock-stars Alvin and the Chipmunks and their friends the Chipettes to stop Dr. Eggman's Daughter, Omelette Robonik in order to save the now supamerged world from destruction. Along the way, love will be found with the Chipmunks and the Chipettes.