Jakub Janota-Bzowski

A young girl, her new friend and his dog try to find a long-lost Picasso painting in an abandoned house before a gang of burglars seize it.

When a pearl in the collectionof the National Museum of Poznań, Claude Monet's "Beach in Pourville", disappears and Aunt Julki is falsely accused of the theft, two children must find the picture and identify the real thief.