This event occurs after the events of Halo 4 but before the events of Halo 5, where Spartan Joseph Means leads a large group of Marines and Separatist Elites off of a Covenant Loyalist Supercarrier. They make use of an Albatross Troop Carrier captured by the Loyalists to make their escape, but due to damages caused by Seraph interceptors, crashed on the surface of Shield World 0277, which is deep into uncharted Space.