A young women was sent to a boarding school and little did they know it was a school for assassins. After being told by the school board she going on a mission. She visits her family and tracks down her target, which seems to be no other then Tobio Kageyama. After leaning Kageyama on, she falls in love him and learns the truth. She goes under from her school and trying to figure out the lies she was told. Will she find out which is lying or will she execute her mission and believe in her school?