When Ralph and his pesky cousins accidentally make a mess at the Mountain View Inn, Ralph decides that he'd better take his motorcycle and leave. He persuade his young pal Ryan to take him to school, where Ralph is an instant hit with Ryan's classmates. But Ralph doesn't like being told what to do. Worse than that, his precious motorcycle gets broken.

"The rousing notes of the bugle and the laughter and shouting increased the feeling of rebellion within Ralph. As the last strains of the bugle call hovered in the clear mountain air, Ralph made up his mind. He knew now what he was going to do. He was going to run away. Fed up with his timid mother and uncle and his squirmy little cousins, Ralph hops onto his toy motorcycle and zooms down the road to summer camp. It turns out camp is not all peanut...

The third of Beverly Cleary's beloved stories of Ralph, a motorcycle riding, rumbustious, talking mouse. When hotel doorman (Ray Walston) almost loses his job, Ralph hitches a ride to school in the pocket of a boy, Ryan, where adventures await.

"A reckless young mouse named Ralph makes friends with a boy in room 215 of the Mountain View Inn and discovers the joys of motorcycling"--WorldCat.

Presents the further adventures of a motorcycle-riding mouse who goes to school and becomes the instigator of an investigation of rodents and the peacemaker for two lonely boys.