"One day, a young man named Jason Frudnick, known for being a genius in the field of robotic engineering, discovered a strange creature that he has never seen before. No records of this mysterious creature could be found, so Jason gave it the name "Fred" and took it to his lab to begin closely observing it.

Shortly after that, an accident occurred in the lab and Fred managed to escape.Fred jumped into a hole that seemingly appeared out of nowhere.Jason followed, and before he knew it, he found himself in a cave where the battle vehicle “SOPHIA III” awaited him.

With his curiosity in this incredibly high tech vehicle piqued, Jason hopped abroad SOPHIA III and began his adventure in the vast subterranean world in search of Fred."