Ruby's dream: to become a famous treasure hunter. Jio's dream: to rule the world!
In a not too distant future, mankind battles over O-Parts, powerful relics from an ancient civilization. Jio is a young boy with a tragic past who only trusts one thing in the world: money. Little does he suspect that he is also a very powerful O-Parts Tactician (O.P.T.), and inside him sleeps a demon of incredible ferocity. With his partner, Ruby, Jio embarks on a dangerous quest to acquire as many O-Parts as he can.
As the battle between Shuri and Jin intensifies, Anna and Kite remain imprisoned. Meanwhile, Jio and Ball prepare for their battle. Jio is an amazing O.P.T., and Ball is stronger than anyone expected...but their opponent is fierce. Will Jio have to rely on the dark power inside him in order to win?