Set during the Third War for Armageddon, Helsreach follows Grimaldus, the newly promoted Reclusiarch of the Black Templars. Leading a group of Black Templars, and supported by the 101st Armageddon Steel Legion and titans of Legio Invigilata, he is tasked with the defense of Hive Helsreach from the Ork invasion.
Helsreach: The Movie
The Black Templars and the Astra Militarum's Steel Legion fend off a massive ork waaagh during the 3rd battle for Armageddon.