Rise of Lions

The Rise of Lions was a campaign where the young Astral Warriors] Space Marine Chapter's home system was beset upon by a large Iron Warriors Warband and their Dark Mechanicus. Fortunately, their salvation came in the form of the Penitent Knights Chapter, which happened to be patrolling their home system. They helped fight off the Forces of Chaos and foiled their attack.

History
During a seeming golden age for Lor'dra, suffering no attacks by Necron or other forces, the Penitent Knights began again to patrol the Asteria Sector. They found a young Chapter of Astartes, the Astral Warriors, beset by a foul warband of Iron Warriors allied with the Dark Mechanicus. Never ones to abandon cousin Astartes in their time of need, the Knights under the command of Knight Captain Gaherion Morn, leader of the Order of the Gryphon, mobilized and made a decisive and quick strike against the traitor warband, the Steel Ravagers. After a day of bloody combat, naval and planetside, the Ravagers were driven back into the Warp after grievous casualties despite their evil and devious weaponry provided by the Dark Mechanicus. Before taking his force onward, Gaherion, with the Lord Crusader’s authority, declared the Astral Warriors allies of the Penitent Knights for their impressive display of valour during the battle.