Matilda has been travelling with her family but now she's back in Australia and staying on her cousin's farm. Matilda loves spending time with the animals, her cousin Emily and her friends Amy, Jasmine and Bronte (even if she's a bit shy around them after being away all this time). She especially loves going down by the creek and watching the frogs. There's one little froglet she likes in particular. She calls him Peep because of the funny little noise he makes.

One day, Emily brings Matilda a present. She and her mum have found an old tin containing a leather pouch and a beautiful Chinese comb. Why are these two items together in the tin? Where did they come from?

Things get even more mysterious-and adventurous-when naughty Peep stows away in Matilda's jacket and escapes. Now there is a mystery to solve and a frog to find! Can the girls work together to make everything right again while having a lot of fun at the same time? Of course they can! They're Australian girls!

Matilda's Frog Trouble is a story about history and about friendship-between people from far-off lands and girls who seem different at first, but are really quite alike-and about the importance of looking after our precious wildlife.