Why can one world be seperated by others? Yet we are as close to the next we can touch but not disturb the peace? But when the laws of Chaos are broken, what happens then? The person who commits that crime will stay at the third dimention forever. Suddenly, it begins to happen to Tails. Then, Sonic and his counterparts must travel to the second dimention to find the seven chaos keys. So that he can try to save Tails.