
S01E01 Episode 1
Seok Ji-won and Yoon Ji-won reunite after 18 years, as chairman and gym teacher of the same school.
Seok Ji-won and Yoon Ji-won begin dating and discover old letters and texts they had sent each other.
Born on the same day and with the same name, Seok Ji-won and Yoon Ji-won have been enemies for generations, and reunite after 18 years.