Charlie ends up in a wheelchair after having an accident, but the gang begins to have some goofy ideas about what to do with his new apparatus. Meanwhile, Dee, Dennis and their estranged father try to reconnect with one another, but Dad becomes too enamored of their youthful lifestyle.
The gang tries to keep the bar's location from being re-zoned and, therefore, taken out of their hands. Meanwhile, Frank flips with despair when his wife shows up in town.
Dee and Dennis quit the bar after Frank begins to meddle incessantly and decide to go on welfare to get some income, forcing Mac and Charlie to cope as the two remaining owners.
Dennis looks to get revenge on Mac after Mac sleeps with Barbara to mess with Frank.
Dee agrees to let Frank teach her how to box after she gets mugged, but while at the gym, Frank runs into an antagonistic figure form his past. Meanwhile, Mac and Dennis have plans for Charlie to enter into a street fighting match.
The gang is forced to perform some community service after an arson charge is leveled against them in court. While Frank and Dennis attempt to get closer, Charlie goes into AA, where he has a major epiphany.
The gang decides to exploit a water stain in the bar shaped like the Virgin Mary, due to a leaky pipe, in order to make some money.
Dennis decides to run for political office when Frank offers his expertise to the gang on the political world, which includes a lesson in bribery.
Following a heated discussion about people's rights, Dennis and Mac decide to eliminate all rules at the bar, allowing patrons to do and act as they please. This move prompts Frank to take full advantage of the new arrangement.
Dee receives an e-mail out of the blue from a man who claims to be the biological father of her and Dennis. Mac, meanwhile, decides to pay his convict father a visit.