交换：朋友的妻子2

　　夜深人静，荒郊野岭。几名青年男女去永宁县某废弃工厂探险，并全程微博直播。他们为自己的无知和胆大妄为付出巨大代价，最终一死一疯，另外两人昏迷不醒，还有一人下落不明。美丽女记者萧薇（邓紫衣 饰）的妹妹霈霈及其朋友子妍正是这场意外的受害者，从医生口中得知，妹妹她们出事前一定受到常人难以想象的惊吓。萧薇的搭档阿康（唐禹哲 饰）调查后发现，霈霈她们前几日都曾被某神秘微博帐户@，之后在她们微博中便各自出现一个倒计时的画面，而业已归零的正是当前的死者子妍。　　绝不相信鬼神传说的萧薇，决定亲自涉足永宁工厂一探究竟。伴随萧薇和阿康的追查，恐怖真相慢慢浮出水面……

　　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.

1945年在广西黔江红石滩上，曾发生过一场以少胜多、以弱胜强的战役，面对300多名的日军精锐，广西义勇军凭借红石滩天险设下“死亡陷阱”激战15小时，击毙120多名日军，狠狠地打击了日寇，极大鼓舞了当地民众的抗日斗志。