Eight days before the end of the great holiday, a very different guest appears from under the tree house. I have a good time. The children of the tree house understand that this time their music alone will not be enough. They will have to think of a brilliant idea to get out of this adventure in peace. The children's project of Yaya's tree house (the snake fish) and Ran Cohen Aharonov has in a short time become a unique phenomenon in the Israeli culture for children. The first book in the series, Mvtsa Horsha, was a bestseller and was selected for the Ministry of Education's Book Parade; The show, the musical albums and the show with the best musicians in the country were praised; The television series won the Academy Award for Television. The children of the tree house - to free the infidel, the second book in the series, is also accompanied by the illustrations of Yaniv Shimoni, one of the leading poets in Israel.