The dramatic series follows the Covert Investigations Unit (CIU), an elite undercover police unit that infiltrates criminal worlds. In nerve-wracking confidence games, or "plays," these cops flirt with killers, befriend gangbangers and arrange gun shipments - all to collect evidence and coax confessions. CIU cops are full of charm and humour. They think quickly, talk smoothly and rely on their charisma to inspire trust. But undercover "plays" are unpredictable - they can turn on a dime. If these cops aren't convincing, if they aren't real, if they miss one cue - their lives could be over in an instant. After posing as high-rolling millionaires, cocaine dealers and hit men, they return home and try to prevent the job from corroding their personal lives.