There are still monsters about, and the gang is spending their days fighting them.  They go to school during the day, and when they're not at school, they protect the city from monsters.  But their peaceful routine is interrupted by the arrival of Mana Livingstone: a transfer student from America who's got the craziest ideas about Japan!
If it looks like the Monster is going 
to damage the surrounding area...
Sollte ein Monster der Umgebung
Schaden zufügen wollen …
El monstruo parece
que dañará todo el túnel…
El monstruo parece
que echará abajo el túnel…
Quando i mostri vogliono danneggiare
l'area circostante...