While out on their rounds one day, Tsugumi and Hisui learn of the existance of a book written by a prostitute from Yokohama's redlight district. Hisui seems especially desperate to get his hands on this book and when Tsugumi learns the reason why she becomes determined to help him. When Tsugumi discovers that Shiginuma Shouko, wife of the shady owner of the Nachtigal dance hall, she finds herself stepping back into potentially dangerous territory alone.
but you know how there are many ships 
that sail into Yokohama from overseas?
لكن تعرفين أنّ هنالك الكثير من السفن
التي ترسوا في يوكوهاما من الخارج؟
aber wie du weißt, laufen viele ausländische
Schiffe im Hafen von Yokohama ein.
pero ¿sabes que vienen
muchos barcos a Yokohama?
pero ¿sabes que vienen
muchos barcos a Yokohama?
mais le port de Yokohama
grouille de navires étrangers.
ma avrai sentito parlare delle molte navi estere
 che attraccano al porto di Yokohama, no?
mas muitos navios partem de
Yokohama para o exterior.
но слышала, сколько кораблей
приплывает в Йокогаму из-за границы?