一名代号 13 的杀手在一次任务中险些失手，之后她被自己所属的组织“阴影”所停职。在一段时间后，这位杀手遇到了Monji，一个不幸失去母亲的小男孩。在Monji意外失踪后这位杀手开始了寻找Monji的路途，她甚至不惜对抗她所属的组织。
Andrea had just turned fifteen when he decided to take his life. He seemed to be a happy teenager, with good grades at school and an excellent relationship with his parents. There seemed to be no explanation for what he did, until his mother accessed his Facebook profile and reconstructed the terrifying bullying and cyberbullying her son was going through at school.
