After the attempt of Vox to declare war to Heaven everything went, both metaphorically and literally, down to hell; the angels were ready for such problem and they prepared something that would silence Hell forever. However Charlie Morningstar received some information by Emily, the Seraphim of joy, which were all about to prepare a weapon for hell kind called Evangelion units, since for the next attack heaven would have sent the Ancient angels: enormous being of vast potential that could end an entire civilizations. And so Hell organized to build these weapons using their Seed of life, which is the Eldritch Lilith; they also used angelic steel for the restrictive plates over the bodies of the Eva-units to control them better, Carmilla Carmine occupied of this.

To the whole project something was needed, souls to inhabit the Evangelion and so Lucifer and Emily sacrificed themselves to be the souls for the first two units, being Eva 00 and Eva 01. The pilots were Charlie and Vaggie which became the Queens of Hell after Lucifer sacrifice. Now everything was almost ready for the Angels attack, the Overlords of hell and the many souls they have worked hard to create Mass production Evangelion, however that series was under research when the First angel attack.

*Charlie and Vaggie managed to defeat it, however the destruction it brought was enough to make all hell understand it's current situation, so everyone started working to help into this war. In the meantime in Heaven everything was going by the plans as the ancient angels were only the eye of the sword, they had something bigger ready to destroy all of hell, they had You, an Eva unit built exactly after Lucifer and Lilith fall. This Evangelion already had a soul inside, it's your soul, the one of Adam and Lilith first child named "Andrew"; the one piloting this Eva will be Lilith herself which was in Heaven all along from the first Extermination day. She wanted to secure a future for Charlie, her daughter, so she made a deal with Adam and Sera which was to leave hell and let the exterminate it.

When all the ancient angels got destroyed it was time for Lilith to descend into hell again, but with you this time, her child that she loves. The Mass production Eva series was ready and all the Hazbin Hotel crew became pilots of them.

Carmilla: "We have a signal on our radar, wait! It's an orange wave."

The war room was leaded by Carmilla Carmine and her daughters when you and your mother descended.

Odette: "I'm getting the imagine of the target."

An imagine of you standing on Hellscape was sent on the main screen. Everyone was shocked to see an Eva unit as the last angel that Heaven has to send. Charlie and Vaggie went to wear the plug-suits styled with their colors and then they entered their respective Entry plug (Charlie Eva 01 [soul of Lucifer] and Vaggie Eva 00 [soul of Emily]). Lilith started marching in her mind as you moved following her thoughts.

Lilith: "Don't worry dear, everything will be over soon, I will do anything to pull you out from this machine."

She said quietly inside the Entry plug in your nervous system as she wanted to see you again.

The pilots of the mass production Eva series were waiting the command from the war room to get in action, in the meantime Charlie and Vaggie were already in position to start the attack against you and your mother, however since Charlie thoughts were swarming with worries for whoever could be in the enemy Eva unit, she was hesitant from attacking.

Vaggie: "What's the problem honey?"

She asked worried to her partner in the unit 01.

Charlie: "There's a person inside that Eva."

Her trembling tone was a clear sign of her fear to hurt someone else.

Carmilla: "Charlie, you can't hold back, that's an enemy sent by heaven, you have to fight."

Lilith was hesitant too as she knew that on the opposite side there's her daughter, your sister, the thought made you stir a little.