In the heart of Tooth Town, where all the buildings sparkled white and smelled of mint, lived Tooth - a little white tooth who loved to smile a lot. Every morning, before he went off to play, Toothpick would carefully scrub his enamel with a big toothbrush and sing a song about clean teeth. Toothless had many friends: the pink Toothbrush Sparkle, the green Toothpaste and the tiny Nemo, who could squeeze through difficult places. Together they made up the Clean Face team. Each day, they checked that everyone in the Tooth City was taking care of healthy teeth. One sunny afternoon, while playing under a fountain with flowing mint water, Toothpick heard muffled murmurs coming from the grotto of the Toothpickers, which was located at the end of the City. Legend had it that the grotto was sometimes frequented by the Spotted Bug, who disliked toothbrushes very much and was always hiding something strange. Curiosity did not give Toothless a break. "Come with me!" - he called out to his friends. Together they set off along the winding footpath towards the grotto. Along the way, they passed glazed children who waved at them and asked: "Where are you going?" But the Pure Mouth team only smiled mysteriously and walked on. When they stood in front of the entrance to the cave, they heard a strange quiet scrabbling. Sparkle Brush dared to turn on her tiny light. Then something flashed in the depths of the tunnel...