Ren returns to the town of his childhood, Kaminohara. 
Strangely, Ren is unable to recall any memories of the town. 
Meanwhile, his smartphone installs a mysterious game called Monster Strike — heralding the start of a desperate battle!
Seriously, what's going on?!
Was ist hier los?
¿Qué pasa?
En serio, ¿qué pasa?
Sérieusement, 
que se passe-t-il ?
O que está acontecendo?