In a small town, just over the hills, lived Marcel and his younger sister Maja. They were both very fond of adventures, but completely disliked brushing their teeth. One day, when their mum asked them to go brush their teeth, they found something strange in the bathroom. In a cup stood a colourful toothbrush like they had never seen before. Marcel grabbed the toothbrush and it suddenly flashed and.... started talking! "Hi, my name is Brush! Do you dare to discover the secret of the Valley of the Teeth with me?" - she asked cheerfully. Maja looked at her brother with big eyes. After a while, the bathroom began to twist and turn until the children fell softly into a green meadow where huge toothpastes grew and shiny white mountains glittered in the distance! Suddenly, a funny monster called the Toothpaste ran out from behind a bush and tried to hide behind a huge tube of toothpaste. Marcel and Maja knew that only together with Toothbrush could they discover what secrets this place held.... Suddenly they heard a soft, resonant voice: "Only someone who really cares about their teeth can cross the Magic Bridge!" The children looked at each other surprised, because the bridge was right in front of them and it looked like it was made of.... dental floss!