Tosia and Franek really enjoyed going to the park by their house. They were most curious about the old, spreading oak tree that grew in the middle of the clearing. One sunny afternoon, as they were running around the tree, Tosia suddenly noticed something strange. - Franek, come here quickly! - she called out. Under the big oak tree they found small, shiny footprints on the grass. They looked like little footprints, but they glowed silver! The footprints led towards dense bushes, beyond which they had never been before. - Do you think someone special lives there? - asked Franek in a whisper. They looked at the footprints. They were getting brighter and brighter and it seemed as if something very unusual was waiting somewhere further down the road. Tosia and Franek looked at each other with wide eyes. Quietly they began to follow the glowing footprints, until suddenly.... Something shimmered among the branches! Could it be a mysterious creature from under the oak tree? Or perhaps a hidden treasure? Tosia reached out her hand to swing the bushes open and then....