![](https://image.tmdb.org/t/p/w185/bHMqPDsW7Lb71CVHXq4PuEvQ4NY.jpg)
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Nobita is in trouble when his mother finds a test paper he failed in, in his drawer. Nobita wants a lock so Doraemon gives him a key which can lock anything. Once done, only the user can open or shut it, using the words: Open Sesame or Close Sesame. The episode ends up with Nobita locked out of the house in heavy rain because he has a cold which has changed his voice so the key no longer recognizes him.
First Air Date : Apr 02, 1979
Last Air date : Apr 15, 2015
Episode : 1835 Episode
Season : 27 Season
Runtime: 11:14 minutes
Studio: tv asahi
Country: Japan