During what seems to be a routine attack on Dr. Eggman's headquarters to rescue Cream the Rabbit and Cheese the Chao, Sonic and his friends are caught in a massive and mysterious explosion that transports them to what, at first, appears to be another dimension. Separated from his friends, Sonic eventually finds himself in custody of a boy named Christopher Thorndyke, who saves Sonic's life after he nearly drowns in his pool...
During what seems to be a routine attack on Dr. Eggman's headquarters to rescue Cream the Rabbit and Cheese the Chao, Sonic and his friends are caught in a massive and mysterious explosion that transports them to what, at first, appears to be another dimension. Separated from his friends, Sonic eventually finds himself in custody of a boy named Christopher Thorndyke, who saves Sonic's life after he nearly drowns in his pool. Chris lives in a lavish mansion, funded by his two celebrity parents, with his Grandfather, Chuck. Chris aids Sonic in locating his friends, and it is not long before Dr. Eggman makes his presence known. As Sonic and Eggman race to collect all the Chaos Emeralds (Sonic wants to use them to get home to his own dimension, and Eggman wants to use them to conquer this new world), Chris must deal with the mental problems associated with having parents that are too busy to take care of him. When Grandpa Chuck invents a dimensional portal to send Sonic home, Chris kidnaps Sonic, because he does not want Sonic to abandon him as his feels his parents did. Eventually, with the help of Sonic, Chris comes to terms with his feelings and Sonic returns to his own dimension. However, Chris vows that one day, he will see Sonic again.