Falling in Love with You Sour and Sweet tells the story of Jang Hyuk, a man from science and engineering, who began to pursue her after meeting nurse Don Eun in the hospital. The relationship between the two developed quite smoothly, but as Jang Hyuk was transferred to Seoul, even if they wanted to maintain this relationship, In a long-distance relationship, real opportunities and challenges are also coming, and the relationship between Zhang He and Duo Eun is facing a test.

This movie stars Jang Ki-ryong as the male lead Jang Hyuk and Jung Soo-jung as the female lead Chae Soo-bin. The two have been together for a year and a half. The male lead was transferred to the Seoul head office due to work, so the two started a long-distance relationship. love.

Long-distance relationship is very difficult for these two young people. From the very beginning, they were very reluctant to leave each other. They missed each other very much every day they were separated. They also kept in touch with each other on their mobile phones. The longer they were separated, the more time they spent together. As time passed, the relationship between the two people also changed.

At the beginning, the two of them lived in Incheon and had a very sweet and enviable love. Since the male protagonist Jang Hyuk went to Seoul for work, the two of them have not been in contact as frequently as before.

The male protagonist Zhang He had a female colleague in his new company. He got along particularly well with this female colleague. The female colleague also confessed to him, but at that time Zhang He had not separated from Cai Xiubin and rejected the female colleague. , At that time, his girlfriend still had a certain status in Zhang He's heart.

After this incident, Zhang He gradually lost confidence in his relationship with Cai Xiubin. He often went out to drink alone with friends of the opposite sex, and hid his identity as a girlfriend. Zhang He's love for Cai Xiubin gradually disappeared, and his love for Cai Xiubin gradually disappeared. His girlfriend's attitude became worse and worse. She often quarreled and quarreled over trivial matters. He used this method to force his girlfriend to break up first.

In the subsequent plot, Cai Xiubin found out that she was pregnant. When she happily told her boyfriend Zhang Hyuk the news, her attitude was very cold. He did not want the child and asked Cai Xiubin to abort the child. He also promised Cai Xiubin to accompany her for the operation, but Zhang He did not come on the day of the operation, and the two finally broke up.