Yukiya must find the way out of the tunnels with Wakamiya, which turns out to be more difficult than expected. However, he finally learns the truth about Yamauchi - and the world beyond its borders.
I was supposed to enter this cave 
to investigate the monkeys alone.
كان يُفترض بي دخول هذا الكهف وحيدًا
.للتحقيق بأمر القرود
eu entraria nesta caverna sozinho,
para investigar os macacos.
а я — в одиночку отправиться
 на изучение обезьян.