Jennifer Lopez stars as New York detective Harlee Santos, a single mother who runs with a group of dirty cops, taking her cut of the bribes and protection money to give her bright and promising daughter the best life possible and a leg up for a better future. However, all good things must come to an end and she is caught by the FBI, which forces her to turn informant on her cop family. Harlee struggles to walk a line between loyalty, honour and betrayal, all the while working to keep everything together for her daughter.