is a 2011 Japanese animated fantasy film based on the American children's book series of the same name by Mary Pope Osborne. The film is directed by Hiroshi Nishikiori, and the film's screenplay was adapted from the Japanese version of the novel series Magic Tree House by Ichiro Okouchi. The film stars actress Keiko Kitagawa as Jack, and also stars child actress Mana Ashida as Annie. Magic Tree House debuted at the 24th Tokyo International Film Festival on 23 October 2011. It was subsequently released in Japanese cinemas on 7 January 2012 and grossed 5.7 million dollars (US). Plot Jack is a shy but confident bookworm and his sister Annie can quickly make friends with whoever she wants, both humans and animals. One day, while they were playing together in a forest, they unexpectedly stumble upon a wooden treehouse located in this forest. This magical treehouse allows people to travel across time and space whenever they liked. Morgan le Fay is accidentally transformed into a mouse named Peanut by Merlin (echoing the plot from books 5–8), and Jack and Annie have to find four magic medallions to rescue her. They visit the late Cretaceous period with dinosaurs (from book 1), a medieval castle (from book 2), the town of Pompeii (from book 13) and a pirate ship (from book 4). At the end, Peanut is once again turned into Morgan. Production Development On 17 November 2010, Publisher Media Factory revealed that the English-language children's fantasy series, Magic Tree House would be adapted into an anime film. Subsequently, in the 6 March 2011 issue of the Asahi Shimbun newspaper, an advertisement announced that the film would be released in Japanese cinemas in 2011. This children fantasy series sold more than 3.3 million copies in Japan, and 92 million copies in 33 different countries worldwide. It is the only film adaptation of the fantasy series, animated or otherwise, although a live-action Hollywood production has also been announced. At a press conference that was held on 9 July 2011, Japanese film distributor Gaga Communication announced that the film would be released in Japan on 7 January 2012. The film is based on the Japanese version of the series illustrated by Ayana Amako, and the screenplay was adapted by screenwriter Ichiro Ookochi. Cast and crew The voice cast for the film Magic Tree House was announced on 8 August 2011. In her voice-acting debut,