The son of Creed versus the son of Drago, the guy who killed the father of the son of Creed.
Stallone previously said Creed would be his final appearance as Rocky, because there was no better ending for the character than where that movie left him. And that’s probably true.
(Or if the movie is closer to happening than I think already.)
On the other hand, Stallone has also said he was through playing Rocky at least three different times that I know (before III and then after V and Balboa) and each time he came back anyway.