Kara is a dog. Worker Lao Er's family is simple: his laid-off wife Yulan, their high school son Liangliang, and a mixed-breed dog named Kara. If it weren't for what happened that night, perhaps the simple life of Lao Er's family would have continued forever. This is how it happened: On this evening, around 9:30 PM, Yulan went downstairs to walk the dog. This task was originally Lao Er's, but he happened to be working the night shift that day. Yulan never expected that because Lao Er was working the night shift, the police were also busy at night - working overtime to catch dogs without licenses! Kara didn't have a dog license, and Yulan thought it was not worth spending 5000... on just a mixed-breed dog like Kara.