One sunny afternoon Alla was playing hide and seek at her grandmother's house. She was hiding in the big old cellar. Suddenly, she saw a shiny mirror in the corner that wasn't there before. Ala came closer and noticed that her reflection was waving at her with her left hand, although she was waving with her right! Curious, Ala touched the mirror. Suddenly, her hand went to the other side! Ala took a step forward and.... she found herself in a strange, colourful world. Huge, pink butterflies flew in the sky and she had soft, blue grass under her feet. A little yellow dog with green ears jumped out from behind a bush and called out: "Hello, Aloia! We've been waiting for you!" Ala jumped up in surprise as the doggie spoke in a human voice. "Come quickly after me!" - said the doggie and ran towards the purple castle on the hill. Alla set off after him, but on the way she heard quiet, mysterious laughter coming from a large rainbow-coloured cave. What could be in there? Ala stopped and looked at the dog. Should she run after him, or should she look into the cave?