Shidou Itsuka is at risk due to his ongoing dealings with Ratatoskr, having already sealed ten Spirits. Isaac Westcott, leader of Deus Ex Machina Industries, intends to kill Shidou and exploit the Spirits' powers for himself. To this end, Isaac launches a full-scale war against Ratatoskr, prompting the organization to divert its resources to safeguard Shidou. Kurumi Tokisaki, Spirit of Time, may provide a crucial advantage in Shidou's fight, as her power could allow him to travel back in time and confront the Spirit of Origin.