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 said that the dossier could contain 
records of the East's human experiments
قيل أنّ الملفّ قد يحتوي سجلاّت
لتجارب بشريّة أجراها الشّرق
Dort steht womöglich was
zu den Menschenversuchen des Ostens
Se dice que en ellos se detallan
los experimentos humanos de Ostania
Se dice que en ellos se detallan
los experimentos humanos de Ostania
Il mentionne l’utilisation
de cobayes humains par l’Est
Si dice che potrebbe contenere informazioni 
sulle sperimentazioni umane dell'Est
Estima-se que possua registros dos
experimentos em humanos do Leste
Как вам известно, командир,