Struggling young lovers, Tom and Eve, must endure a 30-day scientific experiment. Room, board, $50,000 and a month alone together in research facility housing. What could possibly go wrong.

　　一部充满动作戏的间谍惊悚片。娜塔莎·罗曼诺夫/黑寡妇遭遇与她的过去相关的一场危险阴谋，将直面自己那些更为黑暗的经历。一股不惜一切要击倒她的力量袭来，娜塔莎必须面对自己在成为复仇者的很久之前那作为间谍的过往，和曾远离的破碎关系。