After Izzy's imagined water park vanishes as quickly as it went up, Sunny and her friends happily make their way back to the Boardtrot. But one of them gets interrupted by a friend they haven’t thought about for a while… assuming they’d ever met him to begin with.

It’s far from the worst paradox Izzy has to worry about. That's kind of the problem.

Link to Fic: https://www.fimfiction.net/story/566817/the-last-masterpiece