Frank takes advantage of the terrible market and buys a house for little money, expecting to be able to profit from it once the economy improves. However, he and the rest of the guys are surprised to find the family still living there. Dee, also in search of some easy money, decides to become a surrogate mother.

The gang goes on a road trip to the Grand Canyon.

Seeing the effects of the recession, Mac and Dennis try to find a way to keep Paddy’s pub going. Meanwhile, Frank and Dee go into business together...

When Frank’s behavior becomes even more outlandish than usual, the gang decides to stage an intervention....

As the Waitress prepares to get married, Dee is jealous that she isn't a bride to be. Meanwhile, the guys try to reintroduce a broken hearted Charlie into the dating scene....

The gang tries to get out of paying a parking ticket that they received on the evening of the final game of the 2008 World Series...

The gang puts together a wrestling show for returning troops. Meanwhile, Dee finally meets the solider that she has been communicating with over the internet.

The gang decides to expand their business by developing a number of products that they could sell at Paddy’s pub.

Mac and Dennis decide that they need to spend some time away from each other. Meanwhile, Charlie helps Dee search for her cat.

Dennis reveals to the gang how he seduces women.

When Mac and Charlie learn that Dee has gotten a part in M. Night Shyamalan’s next film, the two see this as a perfect opportunity to pitch their screenplay.

The gang reenters Philadelphia's flip-cup tournament (the Flipadelphia) after being banned for 10 years. Trouble is, their old flip-cup rivals have grown up and moved on.

Christmas is nearly here and the Paddy's gang has got the spirit. For the gang the holidays have always been a time of trickery, backstabbing, and disappointment. But this year they are determined to rediscover the joy of Christmas. Mac, Charlie, Dennis, Dee, and Frank embark on a holiday adventure filled with stolen toys, childhood videos, naked elves, and a bloody run-in with Santa Claus that is guaranteed to blast Christmas spirit all over!