Director Yoon is planning a youth romance film set in Seoul. He hunts for hidden gems in Seoul and then smoothly completes the formation of his production team and casting of actors. However, one week before shooting begins, lead actor Seong Jin withdraws from the project, and Chae Man, a member of the production team, decides to take over his role. In the film, Chae Man and Ji Hye. Chae Man falls in love at first sight with Ji Hye, a traveler he meets by chance on the street. Ji Hye, who was adopted overseas in her childhood, gradually opens up to Chae Man, who kindly shows her the way and accompanies her. Meanwhile, Ji Hye is about to finish her short trip and prepare for departure, forcing her to bid a regretful farewell to Chae Man...