Jetek Suberei of the White Scars gains a most curious ally when he and his savage battle-brothers pursue the Tzeentchian sorcerer Karnel the Ruinous to a mysterious planet to save their captured brothers. As events unfold on Valaena, Suberei will have to face his own prejudices if he is to succeed with his mission. The savage hero of the Deathwatch story 'First to Hunt' returns, back in the bosom of his Chapter. And he's given a strange ally indeed, upon whom he'll have to rely if he's to defeat his foe and avenge his brothers.