The gate of Khaine is kinda the central plot for Malys and Vect as both are supported by Harlequins and both (including their colorful benefactors) suspect each other to plan opening up the gate and destroy Commoragh. Malys thinks Vect has gone crazy and will rather destroy the dark city than lose control and Vect thinks Malys have gone so mad about him that she does not care about the city if she can just somehow destroy him.