Jae-hee, who left as a college student, and Seo-ha, who got a job at a company in a local small city, are high school alumni. Seo-ha meets and loves Yoon-soo, the company's president's son, but Yoon-soo is engaged to Jae-hee, whom he met on the train, and goes to the U.S. to study. Seo Ha, who overc...