The story follows a Roman architect named Lucius, who is having trouble coming up with ideas. One day, he discovers a hidden tunnel underneath a spa that leads him to a modern Japanese bath house. Inspired by the innovations found there, he creates his own spa, Roma Thermae, bringing in the modern ideas to his time.
阿部寛
as Lucius
上戸彩
as Mami
市村正親
as Hadrian
北村一輝
as Ceionius
宍戸開
as Antoninus
松尾諭
as Noboru Itami
勝矢
as Marukusu
笹野高史
as Shuzo Yamakoshi
竹内力
as Tateno
キムラ緑子
as Yumi Yamakoshi
外波山文明
as Kishimoto
Hachiro Ika
as Saburo
