The Pirate Cats are up to no good again! This time, Bonzo and company travel to Rome, Italy in the year 80 AD to the opening of the Colosseum, Rome's largest amphitheater. The evil felines want the world to think it was they who designed the Coliseum, and infiltrate the Senate by posing as nobility. Geronimo and friends must hop into their speedy time machine and expose the cats' wily plot, all the while taking in historical landmarks and breathtaking moments of history.