Ex-professional rock musician-turned-LAPD homicide detective JASON BARRETT (32) is assigned by CAPTAIN HOAGLAND (55) to solve a series of murders committed by the Rock & Roll Killer, who uses musical instruments to slay his victims and always leaves a note at the scene of the crime that says "You didn't come to see my band."
As the bodies keep piling up, Jason's girlfriend and PR expert TANYA DONNELLY (27) suggests that he form a rock band made up of undercover officers and let her promote a series of tribute concerts for the victims.
Since "the criminal always returns to the scene of the crime," she suggests that Jason and his fellow officers in the band conduct low-key, informal interviews with all of the musicians playing at the tribute shows, so they can make note of anyone acting suspiciously while they talk about the murders with them.
Meanwhile, Tanya will rent a video booth and encourage everyone else who comes to the shows to record "video memorials" to the murder victims. After the shows are completed, laboratory analysis of the videos with a voice stress analyzer will reveal if anyone showed forensic signs of being suspiciously nervous during the recording, thus narrowing down the pool of suspects.
Initially Captain Hoagland rejects the idea as being stupid. After the Mayor's gay brother's husband becomes the Rock & Roll Killer's next victim, however, Captain Hoagland starts feeling the heat from City Hall and reluctantly "greenlights" the idea, under one condition: Jason's band has to be called Stupid Idea.
Jason then proceeds to enlist the help of overweight evidence room officer ADAM "LANDO" LAND on drums (31), nerdy criminalist PHIL OXLEY (32) on bass and sexy undercover narcotics officer SONNY SONOBUONI (34) on vocals. Even though they suck, they don't care because they are only in the band to catch a killer.
Over time, however, Stupid Idea actually become kind of good! And when Phil switches from bass to the instrument he played in college marching band -- the sousaphone -- they take it to a whole new level. Thanks to Phil's onstage, "fire-enhanced" antics with his sousaphone, a video of their first live performance goes viral on YouTube, and against all odds Stupid Idea literally becomes an overnight sensation.
The band becomes so famous so fast, in fact, that their musical career starts getting in the way of their police work, and Jason learns the hard way that he can't be a rock star and a good cop all at once...unless he is willing to pay the ultimate price.
