There is a bright yellow bus who spends her days driving. She loves carrying children from one important place to another. Every morning they climb in... Pitter-patter, pitter-patter, giggle, giggle-patter. And they fill her with joy.

As time passes, things change. The Yellow Bus gets a new driver, a new route, and new passengers, young and old. Until one day the driving stops for good, and the Yellow Bus is left on her own. And yet, no matter where she is, the Yellow Bus still finds joy and discovery in the world around her.