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 a desperate gambit that is the last hope of turning the tide – but the jungle they’re battling through is as deadly as the enemy they’re fighting and her regiment is shattering around her.