Fei, a student, who was on duty in the old city of Batavia, was visited by a Dutch-Japanese girl named Sara, who lived at the beginning of the 17th century, specifically in 1628 when Governor General Jan Pieterszoon Coen took office. One day after returning from Shanghai, Fei continued his duties. It was at the Fatahi building that Sara appeared again and without realizing it, Fei was taken through a time travelling tunnel back to the 17th century.