Zosia brushes her teeth every evening at the mirror. She has a Sparkle toothbrush and scented mint toothpaste. Mum sets the hourglass for two minutes. Zosia scrubs her teeth front and back. Water bubbles in the cup, like a quiet rain. Suddenly the cup trembles slightly and rings with the spoon. Zosia freezes with foam like a milky beard. A whisper is heard: Hello, it's the Guardian of the Smile! Zosia blinks and asks: Who lives in the cup there? A tiny torch slides out of the lid of the paste. It shines on the mirror and draws a bright map. On the map you can see dots, like hidden crumbs. They are Sugar Dots, hiding between the teeth. The guard says: Need a patrol brush, ready? Mum nods: To do, two minutes! Suddenly there is a giggle and a quick thud in the cupboard. The door vibrates and the torch goes out for a second. Zosia lifts the toothbrush. What pops out of the darkness?