中情局探员卡门来到神秘的地下监狱，审问一名可穿越时空的恐怖份子，他声称自己已经犯下一连串恐怖攻击，将陆续发生。卡门的任务便是厘清前任审讯员为何离奇死亡，卡门心知这一切的答案将扯出更大疑问：这名囚犯的身份真假？目的又是什么？时间一分一秒流逝，卡门和囚犯展开心理角力，胜利者将改写未来…

　　故事发生在一座小镇的医院内。一名警官将一位伤员送进医院后，一群身份不明的神秘人包围了医院。宗教？黑帮？恐怖组织？在知晓这群人的身份之前，一场大屠杀已经展开。

　　In the year 2961, the time is after humanity and nature has recovered the land. A hunter named Cygnus is called to rise above his duty. He provides for Last Arc, a once nomadic band of survivors in need of food and water that is now growing scarce. The answer must be found before a group of outlandish Heretics descend upon them. Cygnus must voyage across the treacherous landscape to defend his people. Sent by Nova, the matriarch of the band, she acts based on her vision for Cygnus to find a seed of hope. The future of Last Arc is for him to discover, Cygnus ventures into a hostile landscape in search of an answer for his people. On this journey of encountering many traps and dangers, Cygnus discovers what has been hunting him is his identity.