1 episode
First episode: E1

In a small town, twelve mysterious letters and a 35-year wait intertwine to shape the lives and loves of a close-knit group of friends. Yu Nian and Shen Cheng’s world is thrown into turmoil when their parents vanish, followed by cryptic messages arriving from another time. Driven to uncover the truth, they plunge into a complex puzzle, navigating dual timelines and unraveling the secrets hidden within the letters that could explain their disappearance.
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1 episode
First episode: E112 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Twelve Letters first aired on August 29, 2025.
Twelve Letters currently has 1 season and 12 episodes.
Twelve Letters is ended, and no upcoming episode is currently scheduled.