When Lin Zhixia, a graduate student in the history of the Republic of China, was sorting out her grandmother's belongings, she accidentally traveled through time and space with a copper button and met Shen Yanci, a war reporter in 1937. She knew that he was going to die, but she was powerless to change it; he rushed to the war with his family and country in mind, and fell in love with her even though they were separated from each other. The love that spanned eighty-nine years ended with a lifetime of waiting for reunion at the end of time.
