Twenty-six years ago, the World Government commissioned a research institute in Northern Blue to develop man-made weapons that were as powerful as "ancient weapons", and Robusta Michelle was the chief scientist in charge of this experiment.
However, ten years later, the experimental subjects who had endured countless cruel experiments broke out!
The research institute was burned down, and all the residents in nearby towns died. These were all "scourges" sent by the experimental subjects.
Fifteen years later, a girl with the same appearance, the same name, and even the same past as the mad scientist at that time came to Marineford to apply for the Navy Headquarters' selection examination.
What is the purpose of that mysterious girl? Will she stir up a big storm in the Age of Pirates?