An elderly man reads from a notebook to an elderly woman about a story between two young lovers, Allie and Noah. The story dates back to the summer of 1940, on Seabrook Island, South Carolina. Allie Hamilton (Rachel McAdams) is a high school girl from a wealthy family spending the summer in Seabrook. At a carnival, Allie meets Noah Calhoun (Ryan Gosling), a local boy who takes a fondness towards her. After Noah's several attempts to go on a date with Allie, she finally agrees, resulting in both of them falling in love with each other over the summer. Once Allie's rich parents have met Noah, they disapprove of him. After a fight with Noah, Allie is forced to leave Seabrook a week earlier than planned, leaving her unable to say goodbye to her beloved Noah. After waiting several years for Noah to write to her, Allie becomes engaged to Lon. She sees Noah's photo in a newspaper she travels back to Seabrook to check on Noah, recognizing the strong feelings she still has for him. Allie is then forced to choose between her fiancé and her first love. Throughout the movie, flashbacks show the elderly man and the elderly woman reading. It is revealed that she is Allie and he is the one she chose. He is Noah. Allie has developed Dementia. They die in each other's arms.