Operation Roman Nose!

OPERATION ROMAN NOSE! Failure Is Not An Option!
Suddenly an awful realisation hit Hooodinee like a bolt of lightning. 'Oh deary, deary me! she cried in sudden alarm, startling Julian who was just beginning to calm down. 'Today is the 13th of March is it not? Crikey, that's only two days before Julius Caesar gets his...' She hesitated momentarily because she didn't wasn't to alarm the boy any further but decided there was no sugar coating it. 'That means it's getting precariously close to when Julius Caesar gets his comeuppance in the rotunda!'
So begins Operation Roman Nose, a frantic race across the ages to return what belongs to Caesar and rescue what rightfully belongs to Julian before the Ides of March in 44 BC. Along the way the boy and the owl encounter an assortment of eccentric characters, some who threaten to delay their progress. Can they make it on time or will the history of the world be turned on its head and if that happens what would this mean from the choirboy from Chiswick?