Ufthak Blackhawk and the green tide descend upon Hephaesto – an Adeptus Mechanicus forge world bristling with loot – only to find it already under siege by the notorious Freebooter Kaptin Badrukk. When his warboss, Da Biggest Big Mek, orders temporary co-operation, Ufthak seeks to make a name for himself by crushing some of the Imperium's most advanced defenders and claiming the greatest prize. But with a sinister new war machine on the horizon, Badrukk's plotting, and a thoroughly annoying grot in his way, Ufthak is going to need the brutal kunnin' of Mork himself just to survive.