Shizuka accidentally swallows her mother's opal which is worth 500,000 yen. Doraemon and Nobita use the miniature sub from episode 41 to recover it from inside her, but play a trick on her which results in Nobita swallowing an eraser, which will have to be recovered.
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