In Hell, Princess Charlie Morningstar opens the Hazbin Hotel, a rehabilitation center for sinners, hoping to prove redemption is possible. With her manager Vaggie and an unlikely mix of guests—including the chaotic Angel Dust, grumpy Husk, and energetic Niffty—Charlie faces skepticism, danger, and the scheming Radio Demon, Alastor. As Hell watches with amusement, the hotel becomes a battleground of chaos.