Auntie Jules agrees to look after her friend Mrs Goodchild's little boy, Teddy, while she goes to a party. He is no bother at all, but he has a favourite toy he always takes to bed - Mr Squeak the mouse. When Teddy accidentally throws it down the mouse hole at the Mill, Grandpa has to shrink to rescue it.

After an afternoon nap with Mr Squeak, Uncle CJ and Josh take Teddy to the lighthouse to meet Mr Mentor, who is also looking after somebody - his friend's cat.

Later that day, it's time for Teddy to go to sleep, but Mr Squeak can't be found. Poor Teddy is upset. Grandpa shrinks again and flies to the Ostrich, where he finds the cat playing with Mr Squeak. He brings the toy mouse back to the Mill and plants him in the courtyard, where he's found. Everyone is very relieved, and when Mrs Goodchild returns from her party, Teddy is fast asleep. Show less