Lucius Modestus, an ancient Roman architect, is looking for work since he is having difficulty coming up with fresh ideas. His pals attempt taking him to a bathhouse to calm him as his manner and personality deteriorate. Lucius drops his head in the water, unable to relax in the frantic and crowded bath. He discovers a secret tunnel that leads to a modern-day Japanese bathhouse, providing him with the inspiration he needs to create something fresh.