Rubble has to round up Mayor Humdinger's kittens, which he has left to be baby-sat at Katie's pet parlor, before they get blown away. Marshall dreams that a shrink ray miniaturizes himself and his fire engine, and the teeny-tiny pup goes on a big adventure in his own backyard. Ryder and the rest of the pups have to be very careful to rescue little Marshall without stepping on him.
—Deepthroat Ghoul