For three Border Patrol agents working a remote desert checkpoint, the contents of one car will reveal an insidious plot within their own ranks. The next 24 hours will take them on a treacherous journey that could cost them their lives.“我……我突然想睡觉。”楚翔握住重机枪的手松开了，之前在卡车底下出现的感觉又重现，他的上下眼皮沉重的要命，浑身无力疲软，一个坚持不住竟然倒在何碧柔身上，何碧柔吃了一惊，围墙外的丧尸越来越近，而这些人中只有楚翔的枪法最好，没有他这个主力，就算有挺重机枪也没用。