The story follows a librarian's quest to decode a mysterious love letter, leading her on a thrilling journey through the world of books, where her own heart's desires intertwine with a series of enigmatic clues....

In the heart of Beijing's libraries, a young scholar discovers a love letter that spans centuries, intertwining her fate with a mysterious past and a future filled with love and secrets....

In the labyrinth of a mystical library, a forbidden romance unfolds across time, testing the boundaries of love and memory....