“Oh! I would really love to see real gladiators in the arena!” says Oscar, as he flips through an exciting illustrated book about ancient Rome with his friend Karydas. Matilda doesn't like gladiator fights at all; she doesn't understand why her friends are so thrilled. However, she eventually gets convinced, and the group sets off on a journey to ancient Rome... Only there, the three friends will find themselves very close to the gladiators, much closer than they would have liked. And a new adventure begins...