This is the story of pen pals for life. Andrew Makepeace Ladd, III is a young boy born into wealth and privilege. Melissa Gardner is from a broken family and struggles for identity and opportunity. What begins as a writing exercise becomes a correspondence that lasts a lifetime. They share letters through the years, eventually meeting and building upon their friendship. Time takes them from friends to lovers, but eventually their lives take them to other parts of the country and even the world. The letters they share sometimes keep them up to date while other times they share their most intimate thoughts. They share a brief affair, but again their lives take them in opposite directions. The sudden death of Melissa brings Andrew to write one last letter to her mother... and it is here where he summarizes a lifetime of emotions, heartfelt words, and a friendship forever chronicled in correspondence.