"Ah! I would really like to see real gladiators in the arena!" says Oscar, flipping through an exciting illustrated book about ancient Rome with his friend Coconut. Matilda doesn't like gladiators at all; she doesn't understand why her friends are so excited. However, she is eventually 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 like. And a new adventure begins..