Each member represented different animals living under the young and mildly despotic ruler of the fictional Kingdom of Haromoni, King Akachin (あかちん国王), whose name derives from the Japanese word for "baby" (赤ちゃん, akachan).
Thereafter, the show focused primarily on several distinct characters, including Lying Queen (うそつQUEEN), Little King (チビッコKING), Hit Jack (ヒットの現場JACK) and Child Gourmet Joker (お子さまグルメJOKER).
Morning Musume members were usually split into two groups who then challenged other Japanese celebrities to compete in a series of one or more games for each character.
In the episode 'Lying Queen', for example, four Musume members faced off against a celebrity artist in a game to determine which of them was lying about a given subject (past gastronomic experiences, among others).
At one point, a third group, consisting of Koharu Kusumi and Aika Mitsui, visited Chinese restaurants and events related to China in order to learn more about Eighth Generation members Junjun and Linlin's home country.