Jiraiya Vs. Pein, the rematch
Takes place in the amegakure buildings, just like in the first fight. Jiraiya has the knowledge he gained right before dying, that Nagato is somewhere else controlling the bodies, but that's all he has. Doesn't know where he is, or what his powers are, or anything.
We're going to be disregarding the statement Pein made about if Jiraiya knew his secret. I wanted to see if there were any actual reasons to justify that statement.