Hwa-ja has been raising three daughters alone in Busan after her husband passed away. One day, the second daughter Hye-young comes back to Busan after having continuous setbacks in Seoul. While spending time with her mom, she accidently sees a letter written in Japanese, which triggers her curiosity. She starts to ask Hwa-ja about her past life and gets to know new stories of her mother that she had never heard of.
| Directing | Kim Min-ju | Director |
| Writing | Kim Min-ju | Writer |
| Editing | Kim Min-ju | Editor |
| Sound | Lee Ju-suk | Sound |
| Sound | Kwon Hyun-jeong | Music |
| Camera | Kim Seon-hyeong | Director of Photography |
| Costume & Make-Up | Lim Song-ju | Costume Design |
| Production | Joh Keun-shik | Producer |
