The courier Dong Hai is an ordinary little man from the bottom of society. He rushes around the city every day, going back and forth between various places, dealing with different people, delivering and receiving parcels. Wearing a suit is his iconic image. In his opinion, this is a respect for customers and an expectation for his future. However, the contrast between image and identity often makes him ridiculed, but he always maintains an optimistic attitude, smiling, and focusing on his work. Dong Hai's persistence not only won the respect of customers in the end, but also helped him capture the heart of Xiao Qing, a convenience store cashier. However, Dong Hai and Xiao Qing's love has always been ups and downs due to various misunderstandings. The two met because of a small accident. After that, Xiao Qing couldn't stand the harassment of Huang Jinbao, the owner of the store, and lied that Dong Hai was her boyfriend, which made Dong Hai even more interested. Then, because Huang Jinbao revealed his humble true identity, Dong Hai, who was ashamed, almost lost the courage to pursue. When Xiaoqing's enthusiasm helped him dispel his concerns, he found that she had someone in her heart and often asked him to send express mail in order to contact her boyfriend who was studying for a master's degree. Fortunately, when he learned the truth, Xiaoqing was heartbroken. Later, Xiaoqing was forced by her brother Lao Qiao, who ran a matchmaking agency, to have a fake blind date. Donghai took the initiative to help her out and deepened their mutual understanding. When Donghai finally mustered up the courage and went to the convenience store at night to confess his love, he was unexpectedly involved in a farce - the thief "master and apprentice" Guapi and Huangmao used the convenience store as an examination room to test their "craftsmanship", the lazy Lao Qiao pretended to be a robber and planned to come to the store to make some "quick money", and the lustful Jin Yuanbao also came to the store... That night, people from all walks of life gathered in a small convenience store and performed a ridiculous farce. In a critical moment, Donghai stepped forward, defeated the bad guys with wisdom and courage, and finally won Xiaoqing's heart...