Chen Yan, a restorer of old objects in Guiyang, was involved in a strange time and space loop on the day his daughter was born on September 18th - every early morning, he would return to the moment when his daughter was born. The only clue to break the situation was hidden in an old-fashioned radio from 1938.
At 9:18 every day, the radio transmits Morse code on time, and the code points to the landmark Jiaxiu Building in Guiyang. As he repeatedly travels through the cycle, the mysterious carvings on the bottom of Jiaxiu Tower, the red cross swaddling clothes left by his wife's grandmother, and old photos of the Burma Road Transport Team gradually connect together: in 1938, Guiyang was on the rear of the Anti-Japanese War. Jiaxiu Tower was once a hidden material transfer station, and the medicines and secrets buried by his wife's grandmother were sending him a distress signal through the gap in time and space.
While Chen Yan was protecting his postpartum wife and newborn daughter in the cycle, he followed the clues in Jiaxiu Tower to trace the historical truth. When the inscription of the word "Qian" on Jiaxiu Tower resonated with the radio, and when his daughter's cry coincided with the frequency of the telegraph code from more than 70 years ago, he finally discovered that this cycle is not only the key to unlocking history, but also the bond of life across time and space. What is hidden in Jiaxiu Tower is never a simple treasure trove of materials, but a guardianship agreement between two generations that spans life and death.
