Chapter 1: The News

Taken place after the Girls und panzer film, Tanya Degurechaff sister of Kay of Saunders is approached by the director Shihoh Nishizumi after a tragic event happens at the school.

As Tanya leads Kuromorimine to multiple victories in Shenshado, She and the other commanders discover something sinister that involves more than just tank fighting, it involves the fate of their entire world..