A necromancer wins. He uses his last spell to drag the hero into a new world as a powerless kid, and now the actual story begins, not the hero's redemption arc, but the sorcerer's. The first episode sells you one show completely. Everything after reveals what Dead Mount Death Play actually is: a supernatural crime thriller where the most interesting person in the room is the villain pretending to be human, and the pacing nearly kills it in the middle, but the character work keeps pulling you back. Polka Shinoyama is not a hero learning humility. He's a god wearing a child's body, and that difference matters more than the show's slow episodes want to admit.

A legendary hero and the necromancer called the Corpse God meet in a climactic battle, and it ends with an unexpected final move: reincarnation magic. Across space and time, a young boy named Polka Shinoyama wakes up in modern-day Tokyo, feeling not quite like himself. While he gets used to his new body, groups that deal in the supernatural start targeting him. One is Misaki Sakimiya, a high school girl who can see spirits and wants him dead from their first meeting. As Polka tries to work out who is after him, he crosses paths with Takumi Kuruya, a contractor who specializes in surveillance and hacking, and Lisa Kuraki, a crime boss based in Shinjuku. With these unlikely allies and others, he faces danger to learn the truth behind his rebirth and what lies ahead for his new world. Adapted from the dark fantasy manga by Narita Ryougo and Fujimoto Shinta, the show is a supernatural action thriller.