Nobita does not understand that where they live now was once underwater, so they go back ten billion years and find it is so but get stranded there. Some nudity.
Genres: Action & Adventure , Animation , Comedy , Family , Kids , Sci-Fi & Fantasy
Keywords: anime , based-on-manga , gadget , japan , school-life , time-travel , watch-TV-series-online-free , watch-anime-series-online