Cadia has fallen. Last to escape the hell that was the Thirteenth Black Crusade's destruction of their home world, the Cadian 101st are bloodied, but unbroken as they fight to prove they deserve the legacy that was left to them.
When a new threat surges through the Gallows Cluster, jeopardising the stability of the entire warfront, the 101st are thrown into the breach. As loyal fortresses fall on the world of Alia, Minka Lesk’s company leads the mad gambit that is the last hope of turning the tide. But when the jungle itself is as deadly as any enemy, can Minka keep her troopers fighting as her regiment fractures around her?