At work one night, photography archivist Charlie Sze-Toh receives a misdirected letter from Wang Tian Wei, a 1920s colonial era Chinese photographer. Through a mysterious digital folder and photographic plates, a conversation is sparked, leading to a romance that spans lifetimes.

In his time, Tian Wei scours a turbulent Singapore for his missing friend Aiko, leading him to the perfumed chambers of a Japanese brothel. Meanwhile, in the modern day, Charlie struggles against a family dynamic dominated by her stepmother, a manipulative matriarch who uses family secrets as bargaining chips.

Communication starts to become difficult and Tian Wei's letters are tinged by the increasing threat of Japanese Occupation. Will one last fate-defying letter from Charlie allow Tian Wei to keep their love alive?