Esta é provavelmente a série Golden Hamster Saga , escrita pelo autor alemão Dietlof Reiche, traduzido por John Brownjohn e ilustrado por Joe Cepeda, especificamente o livro 5, A Missão Final de Freddy .
The final installment in Freddy's internationally acclaimed saga is his most adventurous yet--filled with time travel, crusaders, first love, and a shocking surprise!
Freddy--hamster extraordinaire--shuts down his computer when he is called upon to embark on a journey through time in order to save a young boy's life. Accompanied by Sir William the wise tomcat, Enrico and Caruso the guinea pig poets, and Tjark the robot hamster, the quintet find themselves in a dangerous land filled with Crusaders and wild Hamsters (Has Freddy found the Promised Land?)! But when the Crusaders capture Enrico and Caruso and plan to eat them, the entire mission is put in jeopardy. With time running out, can the team accomplish their mission? Will this be Freddy's final quest?
Esta entrada na biblioteca indica que eles vão para a Assíria (os Hamsters de Ouro são também conhecidos como Hamsters sírios porque é onde eles se originam):
Freddy the golden hamster and his animal cohorts, along with a computerized, robotic golden hamster, travel back in time to Assyria, where some of them are captured by crusaders and Freddy gets a taste of undomesticated living.