The third moon orbiting Concord Dawn existed as a celestial body within the Concord Dawn system. It served as a moon to the fragmented planet known as Concord Dawn. The Mandalorian Protectors, a dedicated band of Mandalorian warriors committed to safeguarding the system, built a base upon this third moon. Following the Protectors' attack on a rebel operation spearheaded by Hera Syndulla in 3 BBY, the rebels Kanan Jarrus and Sabine Wren retaliated with an attack on the Protectors' stronghold, abducting their commander, Fenn Rau. Consequently, Rau granted the rebellion secure passage through the Concord Dawn system.
One year later, Gar Saxon, Rau's Imperial Viceroy adversary, along with his Imperial Super Commandos, initiated an assault on the Protectors Camp, aiming to draw Rau out of his concealed location. Saxon had discovered the Protectors' alliance with the rebels and proceeded to massacre Rau's adherents. Rau, accompanied by Sabine and her rebel allies Ezra Bridger and Chopper, went back to the moon to look into the matter. After uniting to evade Saxon, Rau chose to enlist in the rebellion.