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.

Ralph runs away looking for freedom but winds up a prisoner at a summer camp.

"Boy!" said Ralph to himself, his whiskers quivering with excitement. "Boy, oh boy!" Feeling that this was an important moment in his life, he took hold of the handgrips. They felt good and solid beneath his paws. Yes, this motorcycle was a good machine all right.

Ralph the mouse ventures out from behind the piney knothole in the wall of his hotel-room home, scrambles up the telephone wire to the end table, and climbs aboard

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