The Diary of Memories is adapted from a true story. The story line is centered on the content of Sonia's diary. Nan thinks of Sonia through reading her diary.The story happened at the end of 1999 where students from Southern Taiwan University of Science and Technology and Tainan University of Technology went on a blind date. Several interesting incidents occurred during the blind date and some students who participated in the date started a new relationship with each other. However, a sudden accident took Sonia's life away. Nan, having lost the love of his life, was in deep agony and missed his love very much. How can he meet her again?