Jin Ha-kyung, 35 years old, prepares her marriage. But her future husband, Han Ki-joon, seems a little nervous, even absent. Jin's mother has big doubts about the reliability of this man. Besides, she takes her daughter to see a kind of clairvoyant to have an opinion on this marriage.
Jin Ha-kyung is the meteorologist of the Korea Meteorological Administration. Everything is going well in her job until a hailstorm is not announced. The storm then hits the capital region.
Jin Ha-kyung also has to deal with the pressure of organizing her wedding with her colleague Han Ki-joon.
The rookie meteorologist Lee Shi-woo is dating the weather reporter Chae Yoo-jin who also seems a bit distant. He is rather in a good mood, he even bought a car. He was one of the few staff members who saw earlier that the storm could happen.
Jin Ha-kyung finds out that Han Ki-joon is sleeping with Chae Yoo-jin. The reporter later breaks up with Shi-woo.
Two months later, the lives of the four people have changed. The wedding has been cancelled. They will have to deal with their personal problems within the professional environment.