The secret files called the Zacharis Dossier may cause a war between the East and the West. In order to obtain a painting that is supposed to be the hiding spot for these files, Loid and Fiona enter an underground tennis tournament run by the owner of the painting, Campbell. If they win, the art piece they're after will be presented. Loid and Fiona enter as a married couple and play various skilled players including pro players!
It's quite simple to open it, but there
 might be a lookout standing guard,
،من السّهل جدًّا فتح الباب
،لكن قد يوجد من يراقبنا في الخارج
Ich könnte sie leicht öffnen,
aber womöglich stehen dort Wachen.
Podríamos abrirla fácilmente,
pero puede que haya vigilancia.
Podríamos abrirla fácilmente,
pero puede que haya vigilancia.
Ce serait facile de l’ouvrir,
mais elle est peut-être gardée.
Aprire la porta è abbastanza semplice, 
ma lì fuori potrebbe esserci una guardia.
É bem fácil de abrir, só que
talvez haja alguém de vigia
Вскрыть замок легко,
но есть риск, что там охрана.