In tonight's premium bedtime story, Koko is in a spot of bother! He has lost his precious pink ukelele somewhere in Sleepy Forest and really wants to find it, but how? Luckily for Koko, a new neighbour has moved into Sleepy Forest who might be able to help. A puffin by the name of Agatha Periwinkle has arrived and she has a big dream - to become a detective! With Koko's help, she makes that dream come true and sets off to see if she can solve her first case. Relax, get sleepy, and let’s begin!