A dark power affects Dai’s monster friends, driving them berserk. Brass tries to get Dai to leave. As they argue, a Hero trainer arrives to inform Dai that the Dark Lord has returned. To save those he cares about, Dai undergoes Hero training.
It won't be easy.
If you aren't careful...
...لن يكون الأمر سهلاً. إن لم تتوخَّ الحذر
Das wird kein Zuckerschlecken.
Wenn du dich gehen lässt, …
No será fácil. Si no tienes cuidado…
No será fácil. Si no tienes cuidado…
Ce sera périlleux, sois prudent…
Non sarà facile. 
Se non presti attenzione...
Não será moleza. Se não tomar cuidado...
Будет непросто. Одна оплошность...