Doraemon Movie 03: Nobita no Daimakyou

Synopsis

Nobita encounters a stray dog, unaware that it is a prince from a hidden world. In this distant land, dogs have evolved and established their own empire within the "Smokers Forest." Nobita and his companions embark on a quest to return the young royal to his kingdom. However, upon their arrival, they discover that the situation has drastically changed.