In 1937, during the height of the Second Sino-Japanese War, the Imperial Japanese Army has just captured Nanjing, then-capital of the Republic of China. What followed was known as the Nanking Massacre, or the Rape of Nanking, a six week period wherein tens of thousands of Chinese soldiers and civilians were killed.
The films spans two decades as the story unfolds in a series of flashbacks that begin when Qiyue and Ansheng were just thirteen. The two became inseparable until they met a boy who ended up tearing their lives apart.