As newly conscripted Cadian infantryman Mathias Thorne prepares to leave his home planet, a betrayal by heretic forces leaves the Astra Militarum on the back foot.

It’s a tale of unity in the face of adversity, as some of the most renowned Astra Militarum regiments fight and work together during a desperate counteroffensive.

A combined force of Cadians, Elysians, Krieg, and Vostroyan troopers mount a desperate counteroffensive against the heretics, with a symbolic regimental banner being passed from one soldier to the next. Eventually, the banner lands in the hands of Mathias Thorne – can he summon the courage to deliver it back into Imperial territory?

Written by Sam Ryan.