Why is Plutarch talking with Snow (about Katniss) in the Catching Fire Trailer?

[jericgabas]

I read the book like a month ago this year, and I don't remember any discussion of Plutarch and Snow about Katniss in the book or have I just forgotten. And isn't Plutarch a good guy? maybe it's just a facade for Snow IDK But I still wanna see Katniss put the name "SENECA CRANE" on the doll to impress the judges or something. I don't remember what you address them. Pls explain