Do Over S01 E04 The Anniversary

"Joel Larsen is 14 today. The problem is, he was 34 yesterday."

A new teacher by the name Ruben enters the school. But this is not what worries Joel the most - in the future, Ruben is his stepfather. So to avoid that his mother ever meets Ruben, he tries to encourage his parents to do something special on their anniversary. But his plan backfires, Ruben meets Karen six years before they are supposed to, and they immediately connect. Joel, who don't like Ruben very much, panics and tries to do everything that comes to mind to break them up. He even engages Cheryl to plot with him.