After summer vacation, So-ri transfers to a new school and finds an anonymous letter in her desk drawer with an introduction to the school and a clue to finding the next letter. While following the clues in the letters and searching all over the school like on a treasure hunt, So-ri keeps running into a same-aged student named Dong-soon. So-ri and Dong-soon quickly become friends as they search for the letters together. As she finds one letter after another, the special connection continues, and So-ri's curiosity grows for the mysterious sender.
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Trailer
Crew
Directors
> Kim Yong-hwan (Director) > Oh Min-kyo (Assistant Director) > Oh Ju-yeon (Director of Photography)
Writers
> Cho Hyeon-a (Comic Book) > Jeong Eun-kyeong (Writer) > Kim Yong-hwan (Adaptation) > Cho A-ra (Adaptation) > Park Noo-ri (Adaptation)
