Thermae Romae

A Roman architect named Lucius faces criticism for his traditional bathhouse designs and seeks solace in a public bath. While there, he is unexpectedly pulled through the drain and transported to modern-day Japan, over 1,500 years into the future. There, he encounters people with unique bathing customs. Inspired by what he learns, Lucius incorporates these new ideas into his own work and opens a bathhouse in Rome that becomes highly popular.