Taeko Okajima, a 27-year-old city dweller, seeks solace from urban life by visiting her rural family during harvest season. On the train journey, she delves into memories of her pubescent schoolgirl days, almost as if she's time-traveling with her younger self. Welcomed by a young farmer named Toshio, Taeko forges a special bond with him while experiencing the beauty and challenges of countryside living. Omoide Poroporo elegantly captures Taeko's poignant voyage of reconciling her childhood aspirations with her current reality as an adult.