Once a wealthy family the LaTour’s fortune was eaten up by Robotnik’s taxes and the daughter, Mindy’s, expensive shopping habits. Eager to keep his daughter pampered LaTour offered to house a factory for Robotnik, to build watches that were secretly spying devices, but when Sonia confronted him with what he was doing he agreed to cease production. Aware Sleet and Dingo were on their way to collect taxes the LaTour’s fled, pausing to take one last look at the life they were leaving behind...

Sonia was once a student of the Mobian University and made some very good friends there, she was always a good student; asking all the tough questions. Sonic and Sonia headed there to get some ancient artefacts examined by her old professor.

The Lost City of Mobopinchu is an ancient legend, one that became fact when Robotnik discovered its whereabouts and tried selling ‘priceless’ artefacts to raise money. Oddly enough the artefacts weren’t from Mobopinchu, but Robotnik had found the right sight and nearly made his way into the secret cavern. When the mining site was destroyed by Sonic Underground a cave was opened. Sonic, Sonia and Manic found their way into the underground caves, discovered the treasure and a message from their mother.