It's Always Sunny in Philadelphia is an American sitcom that premiered on FX on August 4, 2005, and moved to FXX beginning with the ninth season in 2013. It was created by Rob McElhenney, who developed it with Glenn Howerton. It is executive produced and primarily written by McElhenney, Howerton, and Charlie Day, all of whom star alongside Kaitlin Olson and Danny DeVito. The series follows the exploits of The Gang, a group of narcissistic friends who run the Irish bar Paddy's Pub in South Philadelphia, Pennsylvania.
