I had a dream where Cao Cao fought for the romans

In my dream the main characters, Cao Cao, Liu Bei(and his sworn brothers), and Yuan Shao where all in the borders between Rome and Parthia. For some reason Cao Cao joins the romans to fight the Parthians and Liu Bei, i think It was Yuan Shao's death. And It was common knowlegde in my dream, about that battle. When i woke up, i spent like a few minutes believing that before clearing my head.