In the dark halls of the Black Castle, Cale Henituse finds himself at the mercy of his crumbling body after pushing himself too far. As his companions-Raon, Ron, and Choi Han as well as others-desperately try to save him, their fear and helplessness mount with every drop of blood he coughs. Bound by their loyalty and love, they refuse to let him fall, even as Cale teeters on the brink of collapse. Amid golden magic, grim determination, and heart-wrenching pleas, the group races against time to save the man who stubbornly bears the weight of the world on his shoulders. But even as the Vitality of the Heart works to heal him, the cost may be too great. Will their efforts be enough to pull Cale back from the edge-or will his self-sacrificial nature finally break him?