When a normal day (beating up Eggman) take a sudden twist, Sonic and Shadow involuntarily go on an interdimensional adventure into the world of the Wild Kratts. Stuck with a group of animal-loving scientists, the two hedgehogs must find the chaos emeralds in order to get home. But a dark secret from a once shadowed past comes to light, and they must learn to fight together to prevent the decay of a world not their own.