Lucius Modestus, a Roman architect from antiquity, is forced to seek new work because he cannot conjure fresh designs. His reputation as a visionary has faded, and the weight of stagnation darkens his spirit. Friends bring him to a public bath hoping he will unwind, but the noisy, crowded room fails to calm him. He leans into the water and discovers a concealed passage glowing beneath the marble floor, leading to a modern Japanese spa where new ideas flow for his next masterpiece.
Armed with insights far beyond his era, Lucius strives to replicate the discoveries, though limited resources often yield mediocre results. Yet his extraordinary ingenuity may capture public admiration and restore his standing as a master builder. He hopes this revival will rekindle the awe of future generations.