While Boruto and the others are forced to participate in Ouga’s experiments, Sarada and her team investigate Boruto’s disappearance and discover the existence of a suspicious individual. 
Meanwhile, Boruto is shocked to discover the identity of someone who may be working for Ouga. Just then, a test subject is found dead—killed for reasons that have nothing to do with the experiment.

All right then, test subjects!
Open your envelopes!
!حسنًا إذًا يا فئران التجارب! افتحوا أظرفتكم
Nun denn meine lieben Versuchs-
personen, öffnet eure Umschläge!
Abran sus sobres, sujetos.
Abrid vuestros sobres, sujetos.
E allora, signori soggetti sperimentali, 
aprite pure le buste!
Certo, cobaias!
Abram os envelopes!
Итак, дорогие мои испытуемые! 
Вскройте же свои конверты!