Enpro - Sector 1: Energy Processing and Storage is the first level of The Lost Mission. The start of the level takes place at the same time as the level Enpro Plant: Energy Processing and Storage in the original Doom 3, when Bravo Team gets ambushed by a squad of Wraiths. The player obtains the Pistol, Machine Gun, and Shotgun in this level, and it introduces a main character in the expansion: Dr. Richard Meyers.