Ever since the Imperial fleets discovered Chogoris, the customs of the military mysticism of the White Scars have repeatedly conflicted with the ideals of Unification. While the battles of the Crusades are burning among the stars, the mysterious ghost Jagatai Khan tries to preserve the uniqueness of his army in the Galaxy, where a cold mind reigns. Although Kagan himself aspires to solitude, the primarch brothers drag him into the greatest battle of views - a dispute about the appropriateness of using psionic forces in legions. Thus, the project of bibliaries is born and opposition to it grows .. Now Khan must decide whether he is loyal to Imperial Truth or to his roots.