露丝（梅兰妮·林斯基 Melanie Lynskey 饰）是在康复中心上班的护士，实际上，她自己也患有抑郁症，正在服药进行治疗。在经历了非常倒霉的一天后，露丝疲惫的回到家中，震惊的发现自己的家遭到了歹徒的洗劫，值钱的笔记本电脑不翼而飞。巨大的压力让露丝感到，自己离崩溃不远了。第二天，露丝撞见了那个经常让狗狗在自己家院子里方便的可恶男人托尼（伊利亚·伍德 Elijah Wood 饰），之后，露丝的手机搜索到了绑定的电脑所发出的信号。露丝报了警，警方却不愿意帮她，无奈之下，露丝只得找到托尼帮忙，想不到托尼一口答应下来，并且很快就付诸了行动。

山姆是一个追求更好生活的聪明电脑黑客，他似乎总是做出错误的选择，即使在他的缓刑官哈利的监视下。现在，山姆被禁止使用互联网，并一直和他最好的朋友、黑客同伴斯坦利一起吃快餐，他假扮成一名邮政工作人员，窃取人们的邮件以维持生计。直到一个字母改变一切。这封令人心痛的信是由美丽的乔西写给她死去的丈夫，一名在阿富汗阵亡的海军陆战队士兵的。这封信唤醒了山姆的某些东西。他不顾一切地想要得到这样的爱，于是开始跟随乔西，偷取更多的信，直到最后找到勇气自我介绍。随着山姆和乔西越来越近，她对新生活的可能性感到温暖，因为他想起了童年留下的价值观。但当山姆的过去以一名咄咄逼人的联邦调查局特工和丢失比特币的形式追上他时，命运就来了。当乔西发现真相时，她必须决定背叛是否会迫使她回来。。。

Sam, a brilliant computer hacker seeking a better life, always seems to make the wrong choices, even under the watchful eye of his probation officer, Harry. Now, barred from using the Internet and stuck working fast food with his best friend and fellow hacker, Stanley, Sam poses as a Postal Worker, stealing people's mail to make ends meet. Until one letter changes everything. Written by the beautiful Josie to her dead husband, a Marine killed in Afghanistan, the heart-wrenching missive wakes something in Sam. Desperate to become worthy of such love, he begins following Josie and stealing more letters, until finally finding the courage to introduce himself. As Sam and Josie grow closer, she warms to the possibility of a new life as he's reminded of the values left behind in childhood. But fate shows its hand when Sam's past catches up with him in the form of an aggressive FBI agent and missing Bitcoins. When Josie discovers the truth, she must decide if the betrayal will force her back.