Jennifer (Laura Dern) is a documentary producer who is making a documentary about the living conditions of women around the world. One day, Jennifer unexpectedly received a call from her mother, Nate (Ellen Burstyn). Nate told Jennifer that he found a diary she wrote when she was 13 years old, which recorded the time Jennifer spent with her riding coach Mrs. G (Elizabeth Debicki) and running coach Bill (Jason Ritter) in summer camp. Jennifer's naive records exposed some news that made Knight very uneasy. Encouraged by Knight and her fiancé Martin (Common), Jennifer decided to find Mrs. G and Bill and ask what happened at the time. Who knew that this move opened the Pandora's box of Jennifer's memory.