Doraemon lồng tiếng S4 Vương quốc dưới lòng đất của Nobita

Nobita attempts to hide a failing test grade using Doraemon's \"Hole-Digging Tool,\" accidentally creating a massive underground cavern. He establishes \"Nobita Land,\" a children's utopia where he rules as Prime Minister, appointing his friends to ministerial roles and using robot police to enforce his will. However, his laziness and tyranny lead to a rebellion, resulting in the collapse of the underground nation and the rediscovery of his hidden test.