When Elena, a Russian immigrant studying in Miami and Carlos her Columbian boyfriend run out of legal options for staying in the U.S. the couple switch partners with Betty and Mike, an American couple who are also their best friends. All is well until the stress of keeping up appearances to their family members and a savvy immigration enforcement agent eventually begins to take its toll.

故事发生在保加利亚的首都索菲亚，近日来，接连发生的数起凶杀案让居民们陷入了深深的恐慌之中，这引起了克拉克大使（Antoaneta Yordanova 饰）的注意。克拉克找到了探员罗伯特（克里斯蒂安·史莱特 Christian Slater 饰），希望他能够调查此案，让真相水落石出，将凶手捉拿归案，肩负重任的罗伯特随即展开了行动。
原来，这一连串案件的幕后黑手是一位名叫维奇（Elika Portnoy 饰）的女子，童年时代的悲惨遭遇让维奇患上了精神疾病，时至今日，她依然还在接受着心理医生卡恩（蒂莫西·斯波 Timothy Spall 饰）的治疗。巧合的是，卡恩和罗伯特是交往多年的好友，被案件苦苦困扰的罗伯特并不知道，他千方百计想要找的人，竟然就藏在自己的身边。