Set against the turbulent backdrop of Forties London, The Night Watch tells the stories of four young Londoners inextricably linked by their wartime experiences. In a time when the barriers of sexual morality and social convention have been broken down, Kay (Anna Maxwell Martin), Helen (Claire Foy), Viv (Jodie Whittaker) and Duncan (Harry Treadaway) enjoy a freedom never experienced before as they engage in secret liaisons and passionate trysts. The drama opens in 1947 as the country is trying to rebuild itself after the war; we find Kay mysteriously roaming the streets, haunted by some traumatic personal loss. Meanwhile, Helen and Viv run a marriage bureau, helping people rebuild their shattered lives by finding love. But their own complicated love lives are less easy to solve. Helen obsessively clings to her tumultuous and volatile relationship with Julia while Viv is continuing an affair with a married man whom she seems unable to break free from. Viv's vulnerable young brother Duncan harbours a terrible secret, when a face from his past re-appears which threatens his fragile existence. Moving back in time through the Forties into the maelstrom of the Blitz, the lives, loves and

“亲爱的我：今天，我7岁生日，特别写封信给你，提醒你要记住，7岁时说过的承诺和我对将来的梦想……”日理万机的女强人玛嘉烈，在40岁生日那天收到来自老家的包裹，竟是7岁时的她特意写给今天自己的信件。玛嘉烈起初感到厌恶，因为这些小女孩的玩意，勾起了不愉快的童儿时回忆；她不知道充满童真的小手作，正一步一步的教导她寻回快乐人生。

多年来，各式各样的人都在不断的获得职位晋升，而安吉拉·沃克作为一名出色的职员，却始终无法晋升。她作为一名黑人女性职员，对这样的结果深感不公。在精心的策划下，安吉拉决定打破局面，亲手改变自己的命运。

消防员Zachary是个不相信承诺与爱情的男人，但当一只流浪橘猫出现在他家门口后，Zachary领养了这只小猫。他遇见了喜爱动物的兽医Marliee。Marliee耐心地教导他如何跟他可爱的小室友相处。而圣诞节快到了，愈走愈近的两人能顺利地在一起，成为一对吗？

桑德拉发现同床共枕40年的丈夫竟然和自己最好的朋友有了外遇，于是决定离家出走到伦敦投奔她的妹妹碧芙。两姐妹的性格和状态有天壤之别，桑德拉心灰意冷保守内敛，而碧芙则热情似火自由开放。然而桑德拉现在最需要的就是改变自己，她跟着碧芙去上跳舞课，由此渐渐找到了自己的舞步，也找到了新的爱情和重新开始的勇气。