 Uncovering Desolation's history in the tunnels, the group learn that the residents died from creating weapons of mass destruction for the Stenza, with the dead cleared up by cloth-like creatures called the Remnants.Trapped by a group of Remnants when forced to a gas-ridden area on the surface, the Doctor destroys them with Epzo's self-lighting cigar igniting the gas.Reaching the monument's location, the Doctor convinces the pilots to claim joint victory in Ilin's holographic tent.