After his mother dies of a heroin overdose, Joshua 'J' Cody moves in with his estranged grandmother, Janine ‘Smurf' Cody in Oceanside, California. He finds himself drawn into a dark world funded by criminal activities that he's been shielded from for years, as she and his uncles plan their upcoming heist. J must prove his loyalty to stay alive, all the while learning that Smurf is the intense, beguiling, and complicated matriarch, who rules over "her boys" with a borderline incestuous love.

As season two opens, the Cody clan is back to their old ways and in the midst of a fun, high-adrenaline heist. But when things don’t go as planned, the family dynamics become more fractured than ever as some members advocate for independence from Smurf. Adding fuel to the fire is an external threat from Smurf's past that has come back to haunt her.

With Smurf in jail and her grandson J in charge of the family business, the Cody men find themselves increasingly divided as they fight for control and their independence in season three. But when outside threats emerge, they have to come together.

In season four, Smurf is back on top reminding her boys who’s boss no matter whom she hurts in the process. Trapped with Smurf, Pope has found new and dangerous ways to deal with his anger, J continues to scheme about how to take over the family business, Craig plots one of their most difficult heists and Deran is worried about his future with Adrian. Outsiders move in to threaten the Cody’s fragile peace, including Angela the former best friend of J’s deceased mother and a recovering junkie, who tries to snake her way back into the family’s good graces. A new criminal crew is also introduced with a surprising connection to the Codys.

Pope, Craig, Deran and J still are dealing with the fallout from the events surrounding Smurf’s death, including family members out for revenge. With their kingdom without a leader, the Codys struggle to maintain their fragile alliance, and to see which of them will come out on top. Meanwhile, they search for more information on Pamela Johnson, whom Smurf made the beneficiary of her estate. And back in 1984, an increasingly volatile 29-year-old Smurf is forging her own path raising Pope and Julia and leading the charge on dangerous jobs with new and old friends.