The Destructive Caster of Ainz Ooal Gown, a powerful demon named Ulbert Alain Odle, is reincarnated into another dimension where everyone likes to break into song while being hunted by homicidal Angels. He struggles to find a place to stay for the night, until he comes across a live broadcast from a random news source which displays the Princess of Hell -Charlie Morningstar- who is planning to redeem sinners through a hotel. Needless to say, Ulbert is intrigued...