In the provincial city, Ryonazawa, that Millia and co. live,
the once peaceful city is suddenly exposed to an onslaught
of inter-dimensional invaders. ‘Echidna’!
The city-scape left in ruins and
legions of monsters flow through the streets.
Helpless citizens succumb one by one.
In order to reclaim their city and restore peace,
Millia and co. begin their battle against the Echidna.