In this sequel to Doom (2016), Hell has taken Earth, so it's up to the Doom Slayer, the ultimate demon-killing machine created by a mystical force, to rip and tear the forces of Hell apart. However, Hell is not alone in this fight.
The gates of Hell have opened once again, and the only thing to halt the demonic plague from consuming the world entirely is you, the Doom Slayer. Fight horde after horde of the armies of Hell with a new assortment of weaponry and abilities, across diverse and in-depth playing fields, sending those damned souls back from whence they came.—Rastacha
The Doom Slayer spends his time in hell surviving and murdering legions of demons which earns him the title of Doom Slayer. He killed so many demons that he's now revered as some sort of devil himself in their world, which leads to the demons imprisoning him in a tomb so that he can't wreak havoc anymore.
The Khan Maykr is trying to consume all life on earth to her own army which includes ending the human race. As you play through as the Doom Slayer you must stop her evil sacrifice from ever coming to fruition and help and old friend, mean while you are struggling with your memories from the past and losing friendships with the people who took you in.—doomguy38