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!
You'll regret it forever 
if you let this slip away.
ستندم للأبد إذا فوّتها عليك
Das ist eine einmalige Chance!
¡Siempre lo lamentarán si la ignoran!
¡Siempre lo lamentaréis si la ignoráis!
Ne la ratez surtout pas !
Se ve ne andate ora, ve ne pentirete per sempre!
Você se arrependerá para 
sempre se deixar escapar.
Шанс, который выпадает раз в жизни.