Upon awakening in the afterlife, Otonashi realizes that he cannot recollect any of his prior existence before passing away. In a struggle to evade a destiny that could only end in misery, he enlists with the SSS to fight against Angel, whose ultimate objective is to wipe out all residents of this realm beyond death. Nevertheless, as Otonashi endeavors to regain his faculties and comprehend this new world, he uncovers that not everything is as it had initially appeared.