模范警员范党育（张嘉译 饰）是上河村派出所所长，每天要面对各种各样复杂纠结、鸡毛蒜皮的邻里小事。比起大案，这样的小事更让人难以决断。此外，派出所的资金短缺问题也一直在困扰他。值得庆幸的是，在党育的身边，有高宇成（郭京飞 饰）、和雨桐（王笛 饰）、赵光明（丁海峰 饰）这帮尽职尽责的好友们在默默的支持，在不懈的努力之下，党育逐渐成为了村民心中最信任的对象。与此同时，党育一起长大的朋友秦天民（冯国强 饰）放下了北京的生意，自愿来到上河村，党育觉得如虎添翼。 然而，各种各样的麻烦接踵而来，利益和人情纠葛在一起，让党育忙得有些焦头烂额。一直以来都支持着党育的妻子，也在这个节骨眼上被查出患上了癌症，这给了党育本来就欠佳的身体又一次沉重的打击。 （英语）Model police officer Fan Dangyu (played by Zhang Jiayi) is the head of the Police Station in Shanghe Village. He handles all kinds of neighborhood disputes, trivial or complicated. It’s even more difficult to mediate such disputes compared with solving major criminal cases. Besides, he has been troubled with the shortage of funds for the police station. Fortunately, he is supported by a number of responsible colleagues and good friends, including Gao Yucheng (played by Guo Jingfei), He Yutong (played by Wang Di) and Zhao Guangming (played by Ding Haifeng). Under their unremitting efforts, Dangyu has gradually become the most trustworthy person among local villagers. Meanwhile, Dangyu’s childhood friend Qin Tianmin (played by Feng Guoqiang) gives up his business in Beijing and comes to the village to help him, making Dangyu feel more powerful. However, troubles come one after another and involve conflicts of interest and relations, making Dangyu completely exhausted. At this critical juncture, Dangyu’s wife who has been so supportive for him is diagnosed with cancer. That’s another blow to Dangyu who has been in poor health.