About the book: year / Chasing a butterfly, sisters Imogen and Marie, two very ordinary girls, discover a door in a tree leading to a magical world... Having crossed the threshold, the girls won't be able to go back! They're trapped! And neither the prince, nor the king, nor magical creatures can help them, but only the MAIN VILLAIN of the kingdom! After all, only he has the key to the Invisible Doors. Will the girls really have to face evil and terrible monsters in order to find themselves home again? How will this adventure turn out??