Lucius Modestus, an ancient Roman architect, finds himself job-hunting due to having trouble coming up with new ideas. As his demeanor and personality become dismal, his friends try taking him to a bathhouse for him to relax. Unable to unwind in the bustling and crowded bath, Lucius dips his head in the water. Down there, he finds a secret tunnel that transports him to a modern-day Japanese bathhouse, providing him the inspiration he needed to make a new creation.