Season 1 of the police drama series follows Grace Travis (Thandiwe Newton), a San Jose detective working deep undercover in Oakland . Her primary mission is to dismantle the criminal empire of crime boss Jimmy Laszlo (Marton Csokas). Core Plot

Grace struggles with a "forbidden relationship" with Jimmy while knowing he may have played a role in her son's death.

Jimmy discovers Grace’s true identity early on but agrees to help her find Sam's killer if she helps him find the internal mole.

Her investigation leads her back to Laszlo's organization. Despite her original mission, she forms an uneasy and forbidden alliance with Jimmy, who is searching for a traitor within his own ranks. As they work together, Grace becomes increasingly entangled in the city's dangerous criminal underworld, often crossing moral lines that alienate her from her husband and daughter.