Life or death of a child? Success or failure of a father? The survival or downfall of an entire nation? The fate of a child, the hopes of a man, and the future of a whole nation: In the finale of the acclaimed steampunk comic saga, it's all or nothing! The secret of the copper heart has been revealed, and Heinrich finds himself as a pawn in a wicked game between the returner Leander and the miracle doctor Presteau. Outlawed by the Leonard League and pursued by the protective watch, Heinrich has only one chance to change his fate. Meanwhile, the greatest threat since the beginning of the Blind Days looms, one that could bring an end to Landsberg and the entire earthly realm. When the Calendar Order intervenes and reveals its own intentions with the returned souls, Heinrich is faced with choices.