Richard "Fitz" Fitzpatrick, morally bankrupt top salesman of pre-owned automobiles for 9 years running, hits rock bottom when he crashes a GT on a test drive, puts a woman in a coma, and wakes up to find he's grown a conscience - a living/breathing hanger-on named Larry, who joins Fitzpatrick Motors as a do-gooder salesman, and threatens to undercut Fitz' debaucherous way of life...

After a failed hit on Larry's life, Fitz's only option is to get rid of him by proving Larry's a crazy person. After all, he claims to be his conscience. Meanwhile, Larry tries to purge Fitz of drugs and alcohol. But by the time Larry rallies the Fitzpatrick family for an intervention, Fitz's own sanity begins to dwindle in the throes of the DTs, and he decides to take whacking matters into his own hands...

When Fitz discovers his Father Ken is leaving Fitzpatrick Motors to Larry in his will, he has no choice but to prove Larry is NOT his long lost, responsible brother. And the only way to do it is a quick visit to his absentee, alcoholic mother Elaine. On Fitz's quest for closure however, he ends up at Elaine's weekly key party. When he can't find the answers he needs, he steals her car. Meanwhile, demented Junior Survivalist Kara builds her now growing attempted vehicular manslaughter case by blackmailing Josh with a compromising cell phone.

Fitz quickly unloads Elaine's car in hopes of putting their broken relationship behind him for good. But Larry is convinced it was a desperate plea to get her back in his life. Unfortunately for Fitz, that's exactly what happens. After manipulating Larry into a family reunion, Elaine gets Fitz on board to scam the Ruptals and get the car back. But its all part of a Long Con Elaine concocts to finalize her divorce and rid herself of all things Fitz once and for all...

Hoping to take advantage of spousal privilege, Fitz proposes to a comatose Babs, believing it will prevent her morse-code testimony. In an attempt to placate Larry, Fitz makes him his Best Man. He throws a lame, kid-themed bachelor party - the kind of party Fitz never had as a child. Ali attends in hopes of getting Fitz too drunk to go through with the wedding before Babs is moved to a private facility. But a chance jail-cell meeting with an S&M submissive/ordained minister leaves Fitz free and clear to marry Babs. Everything's coming up Fitz. Until Babs wakes up…