Mercy Callo is a U.S. Black Ops soldier who finds himself the only survivor of a botched prisoner extraction mission. Forced to fight his way out of a maximum-security Chechen prison, he must keep his target alive in order to save thousands of lives. 　　译文(2): Mercy Callo 是一名美国秘密行动的士兵他发现自己是一次失败的囚犯营救任务中唯一的幸存者。被迫从戒备森严的车臣监狱中杀出一条血路，他必须让目标活着，才能拯救成千上万的生命。