１９８７年的夏天，在内蒙古军区２５３医院当医师的刘慧芬，在丈夫的多次催促下，带着对丈夫的思念和对军犬的好奇，来到了首都北郊的一个偏僻山沟里。这便是他丈夫所在的解放军军犬基地（原北京军区军犬队）。刚一进门，刘慧芬就见丈夫坐在院子里的台阶上，守着几头早已... In the summer of 1987, Liu Huifen, a physician at 253 Hospital in Inner Mongolia Military Region, came to the remote ravine in the northern suburbs of the capital with her husband’s thoughts and inquisitive military dogs, repeatedly urged by her husband. This is where his husband’s Liberation Army dog ​​base (the former Beijing Military Region Army dog ​​team). Just enter the door, Liu Huifen will see her husband sitting on the steps in the yard, keep a few heads already ...