One sunny morning, Johnny and his best friend Zosia decided to go into the Old Forest. They had heard that there were deer, squirrels and lots of birds living there. They wanted to see who sang the loudest in the morning. As they walked along the path, suddenly a quiet rustling sound came from behind the bushes. "Did you hear that?" - Jas asked. "Maybe it's a squirrel?" - replied Zosia, but her voice was quiet. They cautiously approached the leaves and saw something shiny. In front of them, right next to a big old oak tree, was a small golden key. Next to the key was a piece of paper with a smiling dragon drawn on it. Suddenly, everything around them became quiet. The children looked at each other with wide-open eyes. Does the key open some secret door in the forest? Or does a dragon live nearby? Just then, something rustled again in the dense bushes and a shadow appeared....