The gang make a disturbing discovery after crashing Maureen's wedding.

Charlie and Dee become romantically involved with two members of a wealthy family, which arouses jealousy in Mac, Dennis and Frank.

Mac, Charlie and Dee struggle with their faith as Charlie's mom fights cancer. Meanwhile, Frank loses his memory amidst a search for buried treasure.

With Charlie under his wing, Frank cleans up so he can get his hands dirty and help out his old company with one last big merger. An unwritten rule of the bar gets the rest of the gang caught up in a case of mistaken identity.

Court is in session at Paddy's Pub as Frank and Dennis present their cases to the rest of the gang, resulting in a verdict that will change their lives FOREVER... but not really.

The gang attempts to cheer up a deeply depressed Dee, realizing they are the cause for her predicament.

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.

Everyone in the gang gets a day to do what they want while everyone else in the gang must participate willingly. This is Mac's Day... and its got twice the "Mac".

The gang gets into the online dating scene to expand their matchmaking potential.

The group separates from one another to find out who they are as individuals after another failed endeavor.

Frank decides to retire; the foursome begin to plot and plan ways for each of them to take control of the bar.

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.

The Gang attempts to ascend a mountain in order for Charlie to fulfill an old and mysterious Irish burial tradition. One by one, the Gang backs out until Charlie is left to honor the dead body alone.

After Frank shoots Dennis and Dee, they resolve to take Frank’s gun away. Mac and Charlie go on a road trip with their moms to get their inheritances -- for Mac, it’s letters written by his grandfather which have fallen into his Uncle Donald’s hands, while for Charlie, it’s a jar of teeth that is now in the hands of his sisters, Bunny and Candy.

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.