The year is 158 AD, and the Roman Empire thrives under the 20th year of Emperor Antoninus Pius’s reign. Lucius, a Roman bathhouse architect, is now sixty years old and plagued with back pain. His wife Satsuki has mysteriously disappeared, his son, Marius, is beyond comprehension...and to top it off, he still has the Roman bathhouses to worry about! 20 years after the end of the series, Lucius now 60 years old in the year 158 AD has undergone a midlife crisis and his wife from present day Japan Satsuki disappeared leaving him with his now adult son who never understands him. As he deals with more problems with his life, Lucius once again is transported to modern-day Japan through a bathhouse, leaving him with more adventures that await him.