As an angel of death, Eden is tasked with fetching human souls and leading them to judgement before they can transform into monstrous creatures known as Unresteds. He hopes his job will be easier when Celestino joins the crew, but the aspiring angel of music has other goals and refuses to cooperate. With the Unresteds growing stronger by the day, Celestino, Eden, and the other death angels must work together or face the same fate as their predecessors.