Prince Taro, also known as “Kaibutsu-kun” is the young prince of the Kaibutsu (Monster) Kingdom. In the drama series, as part of a grooming process before taking over the kingdom, Kaibutsu-kun and the three affable attendants, Dracula, Wolfman and Franken came down to the human world to learn what it takes to be a leader. Time has passed and today is the ceremony for succession to the Throne. But Kaibutsu-kun receives boos and jeers from whole nation for being selfish. "I am leaving this Kingdom!!" Kaibutsu-kun quickly escapes to the human world. But the place where they arrived doesn’t seem to be what they expected...what will happen to Kaibutsu-kun and his attendants??!