Dee is dating a retard
Initially to pay off the debt, The Gang buys more drugs and attempts to sell them at a country club. The gang must find a way to avoid getting "whacked off" when their plans to pay off mob members for missing cocaine go awry. Mac and Dee become vigilantes to solve the homeless problem.
Meanwhile, after buying a junkyard police car to scare the homeless away from the bar, Frank and Dennis dress up in police costumes and begin to abuse the public while Charlie dresses as Serpico and tries to expose them.
First, the Mc Poyles get revenge on the gang for revealing their false molestation charge (from season one's finale "Charlie Got Molested") and inadvertently shooting their brother Doyle (from this season's "The Gang Gets Invincible") after he was invited to the Eagles' training camp by taking all of them hostage in their own bar.
Finally, Charlie's illiteracy screws over the gang when he accidentally puts the bar up as a prize for a dance marathon, and all the enemies made throughout the course of the series enter the contest so they can take the bar away from the gang.
When the Philadelphia Eagles hold open try-outs à la the movie Invincible, Mac, Dennis, and Dee use the event for their own personal competition.
Meanwhile, Frank and Charlie go to a tailgate party, where Frank trips on LSD and make things worse between them and the Mc Poyle family (from "Charlie Got Molested" and "Charlie Goes America All Over Everybody's Ass").
The entire gang struggles to compete with a local bar owned by a Korean man who looks like Kim Jong-il, and then decide to sell out by offering Paddy's Pub to a corporate chain.
Meanwhile, Charlie becomes involved with the owner's daughter (Tania Gunadi).The third season of the American comedy television series It's Always Sunny in Philadelphia premiered on FX on September 13, 2007.The season contains 15 episodes and concluded airing on November 15, 2007.After reading about a serial killer terrorizing young women, half of The Gang suspects that Mac may be the serial killer when they notice how distant he's become and the other half try to catch the serial killer themselves.Mac secretly renews his relationship with Carmen (Brittany Daniel), the transsexual woman from "Charlie Has Cancer".