They say to be careful with what you create, as it may consume you; or in this case, break free and cause absolute havoc when you visit another world. Stephen Colbert, in gaining fame for his satire program The Colbert Report, did so by creating a character to go with it; the near-opposite of what he is. The character of Sir Dr. Rev. Stephen 'Mos Def' Colbert, hosting said program as a wealthy, politically active imbecile, is kept fictional and locked away, coming into existence only to host the Report.

But, as a magical mishap sends the comedian to you-know-where, something causes the character to break away and create a life and body of it's own. Now the Ponies must not only find a way home for a strange new visitor, but also find a way to stop his radical, moronic, activist clone from turning the land upside-down.