The 9 season of It's Always Sunny in Philadelphia was broadcast on FXX from mercredi 4 septembre 2013 to mercredi 6 novembre 2013. It consists of 10 episodes, the first one is called "The Gang Broke Dee" and the last one "The Gang Squashes Their Beefs".
Four egocentric friends who run a neighborhood Irish pub in Philadelphia try to find their way through the adult world of work and relationships. Unfortunately, their warped views and precarious judgments often lead them to trouble, creating a myriad of uncomfortable situations that usually only get worse before they get better.