One rainy afternoon, Zosia was playing in the attic at her grandmother's house. Among old books and toys, she suddenly saw a beautiful, shiny clock with big hands. As soon as she touched the hands, the clock began to tick quietly and glow with coloured lights. Zosia called out to her faithful teddy bear, Pimek. Together they watched as tiny sparks began to fly out of the clock. Suddenly, they heard a voice: "Get ready for an extraordinary journey!". Zosia hugged Pimek tightly and closed her eyes, and everything began to whirl around them. When she opened her eyes, she saw under her feet.... huge dinosaur footprints! But could it be that they had moved back to a time when dinosaurs lived? Is there really something moving behind the bush?