The postal detectives are put to the test when they seem to be unable to deliver a damaged letter from a military veteran that's a matter of life and death. Oliver and his father Joe embark on a father-son bonding adventure that ends up putting both their lives at risk. 　　译文(2): 当邮政侦探似乎无法从一位退伍军人那里递送一封损坏的信件时，他们面临着生死攸关的考验。奥利弗和他的父亲乔开始了一场父子联络感情的冒险，结果把他们的生命都置于危险之中。