Moonlit Winter

Yoon-Hee lives with her teenage daughter Sae-Bom. On a winter day, Yoon-Hee receives a letter from Otaru, Japan. Sae-Bom accidentally reads the letter and learns about her mother's first love, which she never spoke about before.
The arrival of an intimate letter prompts a young woman to bring her mother on vacation to a small Japanese town, where someone special resides.