In this action-packed dark fantasy, humanity lives under the threat of annihilation by immensely powerful dragons. The dragon hunter Ragna embarks on a revenge-fueled quest to eliminate that threat once and for all!

As the battle against the dragon horde rages on, Ragna rallies from the edge of defeat and awakens an immense new power that had been lying dormant within him. Meanwhile, as Fu and his team of thaumaturges protect the magic teleportation circle at the center of the base, Crimson hatches a tactically brilliant plan and plunges the battlefield into chaos!