When the Gates of Hell burst open, chaos reigns as demons run amok once more. Touka Scott, an eccentric villager, finds himself entwined in the turmoil when a demon targets his childhood friend, Yuna Eunice. Just in time, the famed hero Sion Blandan swoops in to vanquish the fiend, only to meet an unfortunate end in one of Touka's own traps set to protect his radish farm. Through the powers of necromancy, Anri Haysworth revives Sion by merging Touka's soul with the fallen hero's body. Now inhabiting the legendary champion's form, Touka must seal the demonic portal and battle the forces of darkness to restore peace. Joined by Yuna and Anri, Touka grapples with his newfound destiny and the legacy of Sion as they set forth to rescue the world.