Meet Nico. One minute, she's blacking out, which is typical for her, until she wakes up in Hell. Before she knew it, she stumbled into a sticky situation, which would've been the end of the line for her if it weren't for a certain infamous actor who welcomed her into his family. Now, she and he are as thick as thieves and live in the Hazbin Hotel, run by King Lucifer's daughter, Princess Charlie Morningstar, and Charlie's girlfriend, Vaggie. One day, the four of them return from work, war, and an interview to find Alastor, the infamous Radio Demon Overlord, looking for something 'entertaining' to keep him busy. While his methods may be shady, Charlie accepts his help, and the real work begins. The following is a 'Hazbin Hotel' x OC insert; All characters, excluding the OC belong to the creators of 'Hazbin Hotel'; For the sake of avoiding copyright infringement, some scenes will be revised and/or removed to signify the differences Nico's presence creates.

(Story for ages 18 and up) Angel Dust left the Hazbin Hotel two years ago, after Valentino took away the one person he loved more than anything, moving into the apartment directly across from Hell's number one Hitwoman and his quiet neighbor who couldn't stand him- Kai Maximov. After two years of tormenting her for his own amusement, he was forced to come back to the hotel- but not alone. Now he had to play nice with her, according to Charlie, if he wanted a chance at redemption. What the hell happens when she, unintentionally, turns his entire world upside down and makes him question things about himself that he was so sure of? Kai just wanted to be left alone. She just wanted to work and be by herself. Her annoying neighbor, apparently, didn't give a shit She thinks she'll finally get a break when his old friends force him to come back, but apparently, she was wrong. So very wrong. But now, parts of her that she kept locked away start coming up to the surface. And it's all thanks to the annoying bastard. How do the two of them deal with confusing feelings, an obsessive psychopathic freak of a boss, and secrets being forced out into the open? (There's a bit of a Bendy and the Ink Machine crossover here, for Kai's backstory. I own none of the characters aside from Kai Maximov.)

Vaniquette, a sinner that died in the 1980s, is a pyromaniac/arsonist obsessed with bombs and looking amazing while doing turf wars. When her territory gets destroyed by her best friend Angel Dust, his friend Cherri Bomb, and Vaniquette's self-proclaimed greatest rival Sir Pentious, she coerces Charlie and Vaggie into letting her stay at the hotel. While staying there with Angel, she meets Alastor, Husk, and Niffty as the seven work together to run a hotel to rehabilitate sinners.