Jealous of Frank's newfound happiness reconnecting with his kids and reliving his youth, Barbara gets back at Frank by having sex with Mac. This one act sets in motion a series of back-stabbing and deceptive moves among our gang as they use the threat of sex for their own selfish purposes.
When a leaky pipe creates a water stain on the wall at Paddy's that resembles the likeness of the Virgin Mary, the gang argues over the best way to exploit their little "miracle."
The gang explores the corrupt world of local Philly politics when Frank explains how easy it is to elicit bribes from politicians. However, the gang's initial pursuit of a quick cash pay-off soon falls to the wayside when Dennis begins to think seriously about running for office.
While the gang debates the constitutionality of various bans on people's rights, Mac and Dennis decide to turn Paddy's into a freedom zone with no restrictions or rules, and quickly discover the disadvantages of having too much freedom. Meanwhile, Frank gets a kick out of the whole freedom situation and decides to have a little fun of his own.
Dee is concerned when she receives numerous emails on her myspace.cOm page from a stranger claiming to be her and dennis' father, and she arranges a family dinner with frank and barbara to get to the truth. Meanwhile, all this father-talk strikes a sentimental chord in mac and inspires him to reconnect with his father who is in prison.
Dennis joins up with an environmentalist group but his altruistic intentions quickly sour when he's snubbed by the activists. Dee and Mac decide to raise a baby they find in a dumpster but quickly find out that it's not nearly as fun as they thought it would be, and Frank and Charlie take the concept of recycling a bit too far.
When the Philadelphia Eagles hold open try-outs a la the movie 'Invincible,' Mac, Dennis, and Dee use the event for their own personal competition, while Frank and Charlie tailgate the try-outs and have an altercation with the McPoyles.
Barbara's sudden death has a profound impact on her surviving family. Frank and Dee are furious at being left out of the will and team up to seek revenge on the dead woman. For Dennis, the thrill of inheriting his mother's stately mansion is tempered by the realization that he, Mac, and Charlie are friendless and destined to die lonely and forgotten...unless they meet new friends. The only problem is that they don't quite know how to make friends.
The McPoyle brothers and sister Margaret take the gang hostage at Paddy's, raising the stakes to a new level in the feud between the two groups. Frank, who is up in the bar's ventilation system tracking down his will, may be their one hope for survival.
Dee has a rude awakening when she discovers that the biggest loser and fatty from high school is now a successful and thin fashion designer...making Dee the biggest loser.
The gang declares war against a Korean restauranteur who threatens to bump Paddy's from the coveted and profitable stop on the city's annual pub crawl.
Rob McElhenney
Mac
Glenn Howerton
Dennis Reynolds
Charlie Day
Charlie
Kaitlin Olson
Sweet Dee
Danny DeVito
Frank Reynolds