He was the youngest among his brothers and sisters, always full of energy — laughing, playing, and running around. But one day, Zubik the Mischievous started to feel something strange. He began to ache a little, and a tiny dark spot appeared on his once pearly-white surface. He got very scared and hid in his little corner. That’s when the kind Tooth Fairy came to the rescue — she always helped little teeth whenever they felt unwell. “Don’t worry, Zubik,” the fairy said gently, “it’s just a cavity — a little nasty monster that can hurt teeth if we don’t take care of them.” She explained that cavities are a kind of illness that appear when teeth aren’t brushed or looked after properly. Zubik the Mischievous was very brave, but this was his first time facing a cavity. The fairy gave him an important mission: to brush his teeth regularly to chase away harmful monsters and help his tooth friends stay healthy. Zubik promised to brush every day, and soon his tooth was healthy and pearly-white again. All the teeth in the forest were happy — they now knew how important it was to take care of their health. From that day on, Zubik the Mischievous became a true hero in the forest, always reminding his friends to brush their teeth so they wouldn’t get sick — and so they could smile without fear anytime they wanted.