The fairy tale unfolds at the end of the 20th and the beginning of the 21st century, where the main character of the novel – Marianne, undertakes a mission to save the world. The novel is filled with fantastic and mystical events, adventures await the heroine, and you can join the characters of the novel on their journey to save the world! Stay with the heroine, it will be very difficult… to save the world! Is the mission achievable? Why Mission 777? You will find the answers in the novel!