The five new members of the Earth Defense Club are relaxing in the Kurotama Bath when they encounter Karls, first prince of Honyala Land. Karls wants to rule Earth in a "happy" way, and recruits the Earth Defense Club to help him -- by making them his personal knights!
It's the human realm! Earth!
!إنه عالم البشر! الأرض
Das Menschenreich, die Erde!
¡Es el mundo humano! ¡La Tierra!
¡Es el mundo humano! ¡La Tierra!
Le monde des humains ! La Terre !
È il reame degli esseri umani! La Terra!
O reino dos humanos! Terra!
Владения людей! Земля!