An Yu, a cultural relic restorer, receives a special assignment: restore artifacts from the former site of a girls' school established during the Republic of China era. In the dusty attic, she discovers a diary that was deliberately hidden away. It records the unfulfilled "Moonlight Promise" between Lan Yue, the school's headmistress, and Su Wen, its music teacher.
The historian Lan Ya enters her world. This academic elite in gold-rimmed glasses is none other than the great-granddaughter of Lan Yue, the diary's owner. One is a restorer determined to "preserve history in its perfect state," while the other is a rebellious scholar committed to "tearing away history's disguises." From clashing at every turn to being forced to work together:
A brass key in a secret chamber points to a forbidden secret in the Lan family ancestral home.
Pages torn from the diary reveal a century-old family conspiracy.
A jade hairpin shaped like a jieyuhua hides the emotional code of two women separated by time.
When developer Lin Shicheng begins obstructing their investigation, and the artifacts An Yu restores are repeatedly vandalized, they discover that the tragedy of Lan Yue and Su Wen is happening all over again to them.
You restore artifacts, while I want to restore a history that has been altered.
If the truth puts you in danger, I'd rather never solve this mystery.
Beneath the moonlight,
can two women fulfill the vow left unfinished a century ago?
Theme: Restoration is not only about returning the past to its former state, but also rewriting the future for a love that was never recognized.
