share time: 2025-12-14 02:31:11
Chen Mo, a reserved locksmith specializing in restoring old locks, receives an old copper lock engraved with "Summer 1999" from Lin Xiaoman, a girl determined to uncover her grandmother's "unfinished regret." But when Chen Mo pries open the lock core, a childhood photo of him and Xiaoman tumbles out! Ten years ago in the old alley, the two kids buried a "time capsule," and this lock was the "promise lock" they hung on the old locust tree. As the rust peels away, the grandmother's first love lost to a misunderstanding, and Xiaoman's decade-long secret crush, are both "unlocked." When two generations' unspoken love overlaps in the same lock, Chen Mo finally realizes: what he's fixing is never just a lock, but the "courage" across time—to say "I never forgot" for the grandmother, and "I've been waiting" for Xiaoman.
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