Grandad's umbrella becomes the target of two notorious thieves. It contains a necklace worth £10,000.

Grandad can't stand two people in this world and Amelia Wilcox , the famous actress, is both 01 them! When she comes to the Parkview Rehearsal Hall, Digby Rigby tells Grandad to behave himself - or else!

Grandad is told to retire as caretaker of the Rehearsal Hall because of his age. To prove he's still as fit as a fiddle, he embarks on a course of physical exercises -but then he has to resort to other measures.