A normal human girl is going to a normal human high school. Until she visits an ancient building that the assassins had used in the past. She was some how turned into a fighting machine. She either has to face being a normal human or being a superhero. The one thing that is making her lean to the super hero side is her sister. She is help captive by a guy name Black Lord. She is the only person that could save her. But she can't do it alone. So, if she chooses to be a normal human then her sister could possibility die or get rescued by another hero. Or she could become the hero and rescue her own sister just like she should do. What will she choose?