In the late autumn of the Republic of China, fallen leaves covered the long street.
Qing Huan clutched the old pen and boarded the passenger ship to a foreign country with her parents. The autumn mood and sorrow of separation in her hometown were hidden in her eyes.
In another corner of the cabin, Qingyan was frantically searching for a relic left by his mother - an identical pen.
A hasty encounter and two fateful pens entangled two strangers into the torrent of troubled times.
Farewell and reunion, obsession and miss, when the smoke of gunfire spreads across the south bank of the Yangtze River, can they find the lost each other and the unspoken feelings in the turmoil of time?