While Frank buys a foreclosed house with intentions of selling it for profit, Mac and Dennis become hot-headed real estate brokers, and Dee takes advantage of a suburban couple looking to hire a surrogate mother.
The gang takes Dee's new subcompact car and a U-haul on the road with the intentions of hitting the Grand Canyon, and Charlie attempts to expand his horizons.
After Frank embarrasses himself at the funeral of a deceased relative, Dennis and Dee decide that it's finally time to give him an intervention for his reckless lifestyle.
Dee discovers that the waitress Charlie is obsessed with is getting married to her ex-boyfriend and plots to derail the wedding, while Mac, Frank and Dennis try to get Charlie back on the dating scene.
Fighting a series of traffic tickets, Dennis, along with the rest of the gang, tell the judge about their horrific experiences at Game 5 of the Phillies' world series.
The gang decides to put on a wrestling show for troops returning home while Dee courts a soldier who doesn't seem like the person she's chatting online with.
Taking Dee's advice seriously, Mac and Dennis decide that they're too co-dependent on each other and need to spend time apart. Meanwhile Charlie and Frank help Dee out with a major cat problem in her apartment.
After Dee gets cast as an extra in the new M. Night Shyamalan movie, Mac and Charlie see a perfect opportunity to pitch their script, while Frank becomes a casting agent for Dennis.
Mac, Dennis, and Charlie seek revenge on another bar after their 10-year ban in a local flip-cup tournament is lifted, but find they need serious practice. Dee discovers new skills, and Frank wears tight pants.