A young teenage girl named Caitlin Thomas desperately searches to find her long lost father, and on her journey she finds herself on Sonic's planet. She teams up with Sonic and his friends to search her lost father, while also protecting their planet from an invasion of evil cyborgs from an unknown planet called Planet Zero. This story is takes place after the events of the Sonic X animated series where most of the main characters will be present here.
18 parts