Biff and Buff are two tiny dogs. They belong to Mr. Pockets and are small enough to ride in the big pockets of his very big coat. One day a hole appears in the right pocket, and it gets bigger and bigger! Biff, who always rides in the right pocket, is afraid he will fall out and one day this is exactly what happens. Biff is lost. Lots of people try to help him, but he wants only his beloved Mr. Pockets. Will Mr. Pockets ever find him?