Nobody sells their souls like they used to.
Hell is, perhaps ironically, suffering. Voluntarily-given souls are coming in at an all-time low. Why would anyone sell their soul when YouTube exists to teach guitar, ancient knowledge is stored on Wikipedia, and carnal pleasures can be viewed for free pretty much anywhere on the internet?
When Satan takes a cellphone from two teenagers who summoned him, he's struck by some infernal inspiration: it's time to make Hell cool again. Satan, with the help of a Los Angeles-based PR firm, rebrands Hell as a trendy life coaching agency in a desperate bid to keep Hell soul-solvent.
Satan forms a team to lead Hell on Earth, and these core members are our main characters. There's Satan, the somewhat naïve King of Hell who generally just wants to be liked; Beelzebub, the by-the-book fire-and-brimstone archdemon who longs for the Hell's glory days of the Dark Ages and doesn't understand modern Earth; Meridiana, a succubus who's dissatisfied being a (literally) purely sexual being and hopes Earth will allow her to find herself; and Corson, a junior demon with dreams of writing movies who was mocked for his fascination with human media until he was chosen as part of the Hell on Earth team. After blowing must of Hell's financial reserves on marketing, they all live together in a small apartment in Inglewood as they struggle to bring Hell to a new generation of Angelenos.