In the depths of Hell, where sinners are damned to eternal torment across seven rings, two groups emerge amidst the chaos: the ragtag crew of Hazbin Hotel, led by hopeful demoness Charlie, and the dysfunctional assassins of Immediate Murder Professionals (IMP) from Helluva Boss, headed by Blitzo.
As they navigate the treacherous rings of Hell, encountering sin and suffering at every turn, they face formidable foes including Lucifer, the fallen angel ruling over Hell, and Alastor, the enigmatic Radio Demon. Amidst the turmoil, Hell experiences its yearly purge, unleashing unbridled chaos and violence upon its denizens.
For Charlie and Blitzo's crews, survival means forging unlikely alliances and confronting their own demons in a realm where redemption seems impossible. As they navigate the infernal landscape, they discover that salvation may lie not in escaping their sins, but in facing them head-on, together.