能叔（刘烨饰演）是一个缉毒警察，马上就要退休了可却接到了一个任务，需要监视毒贩们的行动，隐藏身份，同时接到任务的人还有花姐（袁姗姗饰演），花姐年纪不小了，可是一直没有一个合适的对象，为此也很着急，恨不得大街上拉一个人来登记结婚。杜宇飞（王千源饰演）平时在警队里面就话特别多，逢人就说话，是典型的话痨，最后一个就是新来的陈笠，陈笠刚刚加入缉毒大队，要经验没有经验要能力没有能力，偏巧这样的四个人竟然要去隐蔽性监督毒贩，为了圆满完成任务，四个人开始在毒贩对面的地方租下来一个地方，开了一家龙虾店，让几个人没有想到的是做缉毒警察不靠谱，可是龙虾店却非常靠谱，已开业生意火爆，几个人也因此闹出不少下滑，但他们不知道的是，龙虾店却有着一个外人不知的阴谋

Uncle Neng (played by Liu Ye) is an anti-drug policeman who is about to retire but has received a task to monitor the actions of drug dealers and hide Identity, and the person who received the task at the same time was Sister Hua (played by Yuan Shanshan). Sister Hua is not young, but she has never had a suitable partner. Du Yufei (played by Wang Qianyuan) usually talks a lot in the police force. He talks to everyone, which is a typical chatterbox. The last one is the newcomer Chen Li. Chen Li has just joined the anti-drug brigade. He needs experience and ability. It so happened that such four people were going to covertly supervise drug dealers. In order to successfully complete the task, the four people began to rent a place opposite the drug dealers and opened a lobster shop. What they didn't expect was that it was unreliable to be an anti-drug policeman. , but the lobster shop is very reliable, the business has been booming since it opened, and several people have suffered a lot of decline because of this, but what they don't know is that the lobster shop has a conspiracy that outsiders don't know