Lostlyne, a young aspiring Hunter from Hiro City, finds himself suddenly thrust into a devastated future. The world is in upheaval due to the rise of the Knights, supernatural beings who have connected all dungeons, bringing chaos to Earth. Endowed with the mysterious Gift of the Last Hope, Lostlyne discovers that his destiny is crucial to restoring the lost balance. Guided by hope and determination, he joins the resistance against the Knights, facing dangerous Dungeons and forming crucial alliances. However, throughout his journey, he uncovers a shocking secret: his Gift can open the doors to the past. Now, Lostlyne must learn to master the Gift and travel through time to alter the events that led to the future catastrophe. His mission becomes a race against time, a "Timebound Redemption," where he must neutralize the Knights before they become an insurmountable threat.