Bruce Wayne and Jim Gordon first met on Gotham when the latter, a police detecive, vowed to find out who killed the former's parents. A lot's changed over the course of three seasons.
At the end of Season 3 of the Fox Batman prequel, the young Wayne heir finally took his first steps to becoming the Dark Knight. In Season 4, which premieres later this month, we'll see him going deeper into the realm of the masked vigilante. While that doesn't mean Batman will finally be stalking the streets of Gotham, it does mean that Gordon will have to figure out who's roughing up all the criminals in town.
"Bruce Wayne is going to go out there and start operating as a vigilante wearing a mask, and we'll see him learning the skills that will one day be used as Batman.” executive producer John Stephens said in an interview DC All Access. “And then moving forward after that, Jim Gordon will realize that this vigilante is operating out there in Gotham somewhere and he goes ‘I’m going to hunt that guy down’ and we have Jim Gordon and a masked Bruce Wayne going head to head.”
Comic book stories in which Gordon and Wayne have an adversial relationship are everywhere. It's one of the ways writers can evolve their partnership into something that's actually fruitful and helpful to Gotham City. Pitting them against each other here, even though Wayne isn't exactly Batman yet, could create a very moving reconciliation when and if the show finally gets to that place. Before he can deal with Wayne, though, Gordon has another problem: The Penguin (Robin Lord Taylor) is still king of the Gotham underworld.
“In the first half of the season this year, Jim Gordon is going to try to loosen Penguin’s hold upon Gotham,” Stephens said. “He does that by forming an alliance with Sofia Falcone, who Crystal Reed is playing, and the two of them work together to basically try to dethrone Penguin.”
So, that's two major storylines that sound like they're really drive Gotham through its fourth season, and perhaps beyond. We'll know more when the series returns September 21.