The strip told the rather whimsical and sad story of a schoolboy named Peter Parker, who lived with his parents and grandfather in perfectly ordinary circumstances until a visit to a fairground left a gypsy angry after an argument with Grandpa. The gypsy promptly put a curse on Grandpa which left him just six inches tall.
As a result, the adventures of the family mainly centred around Peter and his Grandpa, who was in constant danger of being eaten by cats, closed inside books etc., but also handy for getting through tight gaps on various archetypal schoolboy adventures. The strip was essentially an updated version of another strip called "Jimmy's Pocket Grandpa," which had exactly the same premise and had first appeared in the Dandy in 1940. It ran until the early 1980s, and later inspired the Viz strip Mickey's Miniature Grandpa.