When the summer holidays came, Giant and Suneo planning to go adventure to a mysterious place, they asked for help Nobita to speak with Doraemon in order to find a mysterious place, when Nobita wanted to go home, he accidentally saw a dog that are starving, unwittingly by Nobita, it turns out the dog was a prince in his country. when arriving home Nobita began a search mysterious place along with Doraemon, but when it is being carried out these searches they both hesitated and then asked to Dekisuge, but responses Dekisuge were different and stated if mysterious place on earth could not exist, and then they proceeded try and use a satellite of the bag doraemon.

In the end they find a photograph of the mysterious statue in Africa which has been blanketed by thick smoke as "Heavy Smokers Forest" with the discovery of the place was an adventure then begins Nobita and his friends ....