 Before the arrival of the Clans, the 4th Succession War raged. As the union of the Lyran Commonwealth and the Federated Suns attacked both the Draconis Combine and the Capellan Confederation, the son of the ruler of Ander s Moon, and the only survivor of a deadly assault that slew his family, struggles to unite a team of Mechwarriors to seek out his family s murderers.