Overview
I will call you! So you better answer your phone! In the year 2020, a homestay is being conducted for male and female teenagers in preparation for a union between North Korea and South Korea. North Korean girl Ha-jin goes to South Korean boy Woo-yeong's house to homestay. Woo-yeong starts to bully Ha-jin who has taken his room, but alas! First love has found its way to these children. Woo-yeong runs away to Seoul with Ha-jin to help her meet her father.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 13 | 22 | |
 | 13 | 22 | |
 | 50 | 59 | |
 | 34 | 43 | |
 | 43 | 52 | |
 | 10 | 19 | |
 | 26 | 35 | |
 | 20 | 29 |