Andy Barker is a hard working CPA, but when his failing accounting business is mistaken for retired-private-detective Lew Staziak’s, he welcomes the twist of fate and begins his double life as both private investigator and accountant. After witnessing a change in Andy’s confidence, wife Jen becomes a little more supportive of his risky new venture. Andy’s first case involves a hot-grieving wife, a missing husband and the Russian mafia.
A client of Andy's dies unexpectedly during a round of golf. The client’s wife hires Andy to investigate the murder. After looking in to his former client’s death, Andy is shocked to discover that the fat, rude, and at times obnoxious guy had been the object of desire for many women. Simon, Wally, Lew and Andy's wife Jen, lend him a hand with the case. Meanwhile, Simon falls for Andy's assistant.
When Wally, owner of the falafel restaurant is being scammed and forced to serve tainted chicken, Andy and Simon begin to investigate the chicken processing plant. Lew gives Andy and Simon important information about the chicken industry. Meanwhile, in an attempt to impress her new coworkers, Jenny hosts a barbecue at the house but Andy crashes Jenny's party when he suspects the chicken she is serving could be tainted.
Lew forgets to warn Andy about a specific case, Andy's laptop is stolen before he can send in his father-in-law's tax return. Andy races against the clock to file the return and expose a credit card scam involving Loretta Crispin. Simon and Wally help Andy investigate.
Lew enlists Andy's help to investigate a dishonest doctor and his involvement with several of his attractive married patients. Meanwhile, Andy and Jenny lose sleep when their daughter misplaces her favorite toy. Andy and Simon go on a quest to investigate the doctor and locate the missing baby toy.
Andy tries to prove that Lew's old flame, Rita Spaulding is innocent after she has spent the past 40 years in prison. While trying to solve the crime, Andy runs up against Lew's corrupt former LAPD partner, Mickey. Simon helps Andy gather evidence he needs to solve the 40 year old crime.