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.

当红舞台剧女星Charlotte（Marlene Dietrich）这日早晨匆匆叩开情人Jonathan（Richard Todd）的房门，神色慌张地相告她刚刚杀了丈夫。Charlotte紧张更因她马上要去剧场演出，身上穿的却是沾有一大块血迹的裙子。Jonathan将Charlotte安抚一番，来到她家帮她取其它衣服，并在要离开之时伪造了现场，但却因此耽搁时间被Charlotte的女仆看见，Jonathan被迫找上爱恋他的Eve（Jane Wyman）。 　　上是Eve开车带Jonathan逃避警察追捕时，Jonathan对她的讲述，Eve听毕决计为所爱之人赴汤蹈火。但事情却有另外真相。