In the not too distant future, mankind battles over O-Parts, relics from an ancient civilization. It takes a special kind of person to unlock the full potential of these remnants from the past, and a unique breed of humans known as O.P.T.s (or O-Parts Tacticians) become a force to be reckoned with. Unfortunately, O-Parts can be used for good or evil purposes.
Yuria's battle with Python Jack continues, and Python Jack seems to have the upper hand. But Yuria has a trick up her sleeve. Unfortunately, the price may be her soul... Meanwhile, Jio bumps into a childhood friend--and some unpleasant memories--he thought he'd never see again. Have the demons of the past been laid to rest, or is there still bad blood between the two?