Enpro Plant: Energy Processing and Storage is the ninth level of Doom 3. It begins with Bravo Team being ambushed and wiped out, save for a single survivor. The Lost Soul is introduced in a cutscene, and Wraiths first appear here as well. Some rooms are less claustrophobic but more acrophobic, and there is an abundance of plasma cells. Swann and Campbell give up their attempt to intercept the Marines sent to transmit a distress call, and therefore travel by vehicle to the communications complex. A Marine hiding from Swann gives the player the transmission card at the end of the level.