Lindsey Lou's father has gone missing on a mountaineering expedition and she's determined to find him, only she's the least qualified for the job.

Robin and Jenna are getting married. Robin is excited beyond words; Jenna is plagued by panic attacks and struggles to write her vows. But when they arrive at their secluded fairy-tale venue, sinister forces besiege them…

麦克和美亚同在北美危机处理中心工作，负责美国本土的反恐及紧急事件的处理。由于美国的霸道以及全球贫富差距的加大，美国所受到的恐怖袭击不断增多。一天麦克发现一可疑电话，随即锁定跟踪。