Prisoner follows a principled young prison officer escorting a dangerous, high-value prisoner to court to testify against his elite crime syndicate. Throughout the journey, their relationship twists and turns, with the stakes escalating as the crime syndicate stops at nothing to track them down.
Seven years after her daughter's murder, Claudia receives a chilling call: "Mom, it's me. Come get me." With help from Salazar, the ex-cop who worked the case, she desperately searches for the truth.