渠首欢歌

Gyeong-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeon-su, but it's hard to see her after she moved out on her own. Meanwhile, Yeon-su, who is suffering from her ex-boyfriend, Sang-hyun, argues with him again and visits her mother’s house. After Yeon-su left, Gyeong-ah receives a shocking message from a stranger.

德国首都柏林，一起失败的军火交易使朝韩各方势力的对抗趋近白热化。朝鲜大使李学秀（李庆荣 饰）及间谍表宗盛（河正宇 饰）发现来自祖国的另一名冷血间谍董明秀（柳承范 饰）现身柏林，政权更迭让多年漂泊海外的他们心中充满不祥预感。在此期间，宗盛不得不遵照党的指示监视妻子——大使贴身翻译莲贞熙（全智贤 饰）的行踪。另一方面，在追查军火交易行动中遭受挫折的韩国情报机构负责人姜部长（韩石圭 饰）不甘失败，持续追查宗盛的踪迹。 　　在大使叛逃计划失败后，宗盛得知董明秀来到柏林的真正目的。为了避免成为权力斗争的牺牲品和肃清对象，他只得带着妻子绝路逃亡……