The planet Eriatarka grows more inhospitable as it's colonization at the hand of the Chorus continues.

Vep and her fellow students are reaching the end of their basic combat training in the pneumatic arts and begin to exercise their abilities outside the colony-city of Elefstris. Their objective: subdue the unruly planet bent on scouring the Chorus' presence from its surface. But what exactly are they subjugating? And what will the cost of conquering be?