Driven by Frank's insight into the world of politics, Dennis pursues a political career by running for office.

Mac, Dennis and Dee try out for the Philadelphia Eagles. Also interested in becoming an Eagle is Liam and Ryan McPoyle's brother, Doyle.

After Barbara's death, Dee and Frank are unhappy to learn that she left them both out of the will, while Dennis inherits the mansion which he plans to turn into a party pad.

The gang agrees to sell Paddys when they get an offer that is too good to refuse, but it forces the bar's non-partners, Dee and Charlie to find new jobs.

After Mac arrives to the bar with scratches on his neck and exhibiting strange behavior, Frank comes to the conclusion that he is the serial killer terrorizing young women in Philadelphia. Frank sets out with his trusty chainsaw and a doubtful Charlie to find evidence to implicate Mac in the murders. In search of another suspect, Dennis and Dee do a little role-playing in order to help themselves better understand who they might be dealing with.

Mac and Dee become vigilantes in order to remove the homeless from their neighborhood, while Frank and Dennis impersonate police officers.

In the season finale, Charlie accidentally puts Paddy's up as a prize for a dance marathon, which prompts the gang to enter the competition in order to save their bar.

Charlie finds out that the waitress has been seeing someone. He calls on Mac, his so-called best friend, to find out more information about the guy and to beat him up. However, it turns out that Mac is the guy the waitress has supposedly been seeing. Dennis, heartbroken that he's not Charlie's best friend, tries to win him over.

A newspaper critic is kidnapped by the gang after he calls Paddy's pub the worst bar in Philadelphia.

The gang fudge history by claiming that Paddy's Pub was responsible for cracking the Liberty Bell in an attempt to turn their dive into a Philadelphia landmark.

Hoping to make their own dreams come true, the gang sets out to give an unexpected family an extreme home makeover.

With a shantytown taking shape outside, Mac and Dennis try to keep Paddy's going in tough times. Meanwhile, Frank and Dee start a family business.

The gang describes the trials and tribulations they went through, during game five of the World Series, in hopes the judge will clear them of all the citations they received.

Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

A blast from the past prompts the guys to expand membership, and Dee to re-consider her future.

Motivated by the drama teacher who inspired her, Dee takes a job as a substitute teacher, and exposes her students to the culture of Paddy's with a field trip to see the Gang's take on the Lethal Weapon series: Lethal Weapon 5.

Dee's blessed event is fast approaching but the father's identity remains a mystery---to the gang, at least. So they throw a party and invite all of Dee's former flings.

When Frank's long lost brother Gino shows up at the bar, the two of them tell the gang about the jazz club they ran in the 1960s and 70s, and how they fell out over Shadynasty, a singer who was the love of both of their lives.

After slipping into an unhealthy obsession with computer games, The Gang wrestles to define the difference between the real and the virtual worlds.

Tired of failing to be recognized for their years of service in the bar industry, the gang changes their ways to give the patrons what they think they want.

The gang voluntarily quarantine themselves inside of Paddy's in an attempt to keep their singing voices pristine for an upcoming competition when a severe flu outbreak sweeps Philadelphia.

Dennis and Mac enlist Dee to spy on the fish factory across the street, Charlie and Frank grow suspicious and decide to do some spying of their own.

News surfaces about Mac's Dad, Luther, being a murder suspect. Mac goes into full "P.I." mode to clear his father of any wrong doing.

Frank falls out the window causing him to think it's 2006, the gang approaches it as a do-over and attempts to fix their past mistakes.

The gang tries to take a vacation from their usual dynamic by going on a cruise, but old habits die hard.

The gang gets real with one another in the face of death.

Franks Fluids LLC is in big trouble after a news segment. Dee and Dennis help with the PR nightmare and Charlie and Mac work on a scheme to make Fight Milk the official drink of the UFC.

We get to see a typical day in Cricket's world and then a possible redemption when his family intervenes. Will Cricket finally move on from the gang, finding love in the process? Will Cricket go from filthy beast to his former self, Matthew Mara?

Meet Cindy, the new, ethnically diverse female member of the gang who can successfully pull off scams. Everything is working until Mac introduces a new member: a life-like sex doll that looks exactly like Dennis.

In this spoof of Waiting for Godot, Dennis and Charlie stand guard at their laser tag base waiting to ambush their enemy, Big Mo, but Dennis has doubts about why they play laser tag and whether or not the victory is worth it.

In the past, an innocent Dennis learns the horrifying details of Frank's business, a truly sweet Dee is excited to head off for Hollywood, while Charlie and Mac's jobs at the roller rink are in jeopardy.

Mac spends a day at the seminary to truly understand what it takes to become a priest. Dennis and Frank plan an elaborate trap to humiliate Charlie's pen pal. Dee prepares for a date with an Irish doctor. Charlie bonds with his pen pal.

The Gang’s going to be on Bar Rescue but a series of bad omens leads them to believe they are all cursed. They set off to undo the curses and make amends to those they’ve wronged, while Mac, who’s on a run of good luck, meets Chase Utley and invites him for a catch.