In season twelve, Mac, Dennis, Charlie, Dee and Frank tackle all new adventures that include going to a waterpark, dealing with a Wolf Cola PR nightmare, and actually spending a whole day tending bar!
After an electric heating blanket shorts out while the gang watches the Wiz they look in the mirror and realize they've turned black. They have to figure out how to get back to being themselves by going through all the classic body switch movie shenanigans they encounter.
The gang takes a trip to a local water park, ripe with personal agendas and ulterior motives. Dennis feeds off his mantra of "the park provides" and takes on a protégé. Frank and Charlie are determined to ride every ride by any means necessary and Mac and Dee get stuck in a tube slide for most of the day.
Charlie thinks Mac's mom is holding his mom hostage, so the gang installs spy cameras in their house to monitor what's going on. What they end up discovering is the moms are quite entertaining once Dennis makes some quick edits and adds a laugh track to the surveillance footage. Dee wants in on the new hit show, and Frank becomes obsessed with banging Charlie's mom now that he's seen her on TV.
Franks Fluids LLC is in big trouble after a news segment shows Wolf Cola has become the official drink of Boko Haram. Dee and Dennis help with the PR nightmare while Charlie and Mac work on a scheme to make Fight Milk the official drink of the UFC.
A cat-woman, AKA Maureen Ponderosa, is found dead in an alley and Dennis becomes the main suspect.
The gang fight over a lottery ticket and seek out an arbitrator to decide a rightful owner, who also decides if Frank is a hero or hate monger.
Dee dates a male stripper and tries to prove her worth after learning she's his "rock bottom." Elsewhere, Mac and Frank get sucked into a VR war game, leading Mac to develop a case of PTSD.
It's Valentine's Day and Paddy's is packed. Dennis tries to get the gang to do one single day of work, but they are more interested in a mystery crate in the alley.
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?
Dennis reveals he has a baby after his Wade Boggs layover in North Dakota and the gang try to help him get out of the jam, but their suggestions border on the extreme.