Welcome to Purple Bat, the five-star themed hotel in the heart of the mysterious world of humans! A hotel exclusively for witches, its existence remains highly secretive to humans. Until a ten-year-old girl appears and turns everything upside down in the rules.

Because Clara not only understands witchcraft, but she also has immunity to the tea of oblivion that witches usually offer to humans. The human girl Clara and the witch girl Rosalie quickly become good friends. Soon they will need to join forces to prepare the hotel for the opening day and keep Rosalie's true identity hidden from the human school. But the most exciting thing is the secret they discover, which explains why Clara understands witchcraft...