Mrs Pepperpot has a problem - a huge problem - she shrinks! And when she shrinks she finds herself in all sorts of trouble. When Mrs Pepperpot agrees to mind baby Roger from next door, she doesn't know that she's going to shrink. How can she look after him when she's only as tall as a pepperpot? Baby Roger thinks she's a doll and jiggles and joggles her and throws her high in the air. Will Mrs Pepperpot be able to keep the baby out of mischief until his mother comes to get him...?