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!
But, you never know.
Aber es gibt noch Hoffnung.
Pero aún hay esperanza.
Pero nunca se sabe.
Mais on ne sait jamais.
Mas há esperança.